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Finding the Fourth Proportional to 9,507.66, 13,124.07 and 7,145.70

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Solution

The fourth proportional to 9,507.66, 13,124.07 and 7,145.70 is: 9,863.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,507.66 : 13,124.07 = 7,145.70 : x
  2. Step 2: Convert to fraction form
    9,507.66/13,124.07 = 7,145.70/x
  3. Step 3: Cross multiply
    9,507.66x = 13,124.07 × 7,145.70
  4. Step 4: Simplify right side
    9,507.66x = 93,780,667.00
  5. Step 5: Solve for x
    x = 93,780,667.00/9,507.66
  6. Step 6: Final answer
    x = 9,863.70

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Half scale
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Double scale
Find fourth proportional to 9,508.66, 13,125.45 and 7,146.70
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.