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Finding the Fourth Proportional to 8,700.14, 13,057.13 and 3,155.07

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Solution

The fourth proportional to 8,700.14, 13,057.13 and 3,155.07 is: 4,735.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,700.14 : 13,057.13 = 3,155.07 : x
  2. Step 2: Convert to fraction form
    8,700.14/13,057.13 = 3,155.07/x
  3. Step 3: Cross multiply
    8,700.14x = 13,057.13 × 3,155.07
  4. Step 4: Simplify right side
    8,700.14x = 41,196,159.15
  5. Step 5: Solve for x
    x = 41,196,159.15/8,700.14
  6. Step 6: Final answer
    x = 4,735.11

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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.