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Finding the Fourth Proportional to 8,700.49, 13,039.80 and 6,240.11

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Solution

The fourth proportional to 8,700.49, 13,039.80 and 6,240.11 is: 9,352.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,700.49 : 13,039.80 = 6,240.11 : x
  2. Step 2: Convert to fraction form
    8,700.49/13,039.80 = 6,240.11/x
  3. Step 3: Cross multiply
    8,700.49x = 13,039.80 × 6,240.11
  4. Step 4: Simplify right side
    8,700.49x = 81,369,786.38
  5. Step 5: Solve for x
    x = 81,369,786.38/8,700.49
  6. Step 6: Final answer
    x = 9,352.32

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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.