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Finding the Fourth Proportional to 9,611.95, 13,259.46 and 8,350.18

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Solution

The fourth proportional to 9,611.95, 13,259.46 and 8,350.18 is: 11,518.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,611.95 : 13,259.46 = 8,350.18 : x
  2. Step 2: Convert to fraction form
    9,611.95/13,259.46 = 8,350.18/x
  3. Step 3: Cross multiply
    9,611.95x = 13,259.46 × 8,350.18
  4. Step 4: Simplify right side
    9,611.95x = 110,718,877.70
  5. Step 5: Solve for x
    x = 110,718,877.70/9,611.95
  6. Step 6: Final answer
    x = 11,518.88

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Half scale
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Double scale
Find fourth proportional to 9,612.95, 13,260.84 and 8,351.18
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.