Home / 8,631.50-11,910.56-5,275.13

Finding the Fourth Proportional to 8,631.50, 11,910.56 and 5,275.13

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Solution

The fourth proportional to 8,631.50, 11,910.56 and 5,275.13 is: 7,279.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,631.50 : 11,910.56 = 5,275.13 : x
  2. Step 2: Convert to fraction form
    8,631.50/11,910.56 = 5,275.13/x
  3. Step 3: Cross multiply
    8,631.50x = 11,910.56 × 5,275.13
  4. Step 4: Simplify right side
    8,631.50x = 62,829,666.44
  5. Step 5: Solve for x
    x = 62,829,666.44/8,631.50
  6. Step 6: Final answer
    x = 7,279.12

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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.