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Finding the Fourth Proportional to 9,405.80, 14,108.70 and 7,291.70

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Solution

The fourth proportional to 9,405.80, 14,108.70 and 7,291.70 is: 10,937.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,405.80 : 14,108.70 = 7,291.70 : x
  2. Step 2: Convert to fraction form
    9,405.80/14,108.70 = 7,291.70/x
  3. Step 3: Cross multiply
    9,405.80x = 14,108.70 × 7,291.70
  4. Step 4: Simplify right side
    9,405.80x = 102,876,407.79
  5. Step 5: Solve for x
    x = 102,876,407.79/9,405.80
  6. Step 6: Final answer
    x = 10,937.55

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.