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Finding the Fourth Proportional to 8,500.70, 11,718.63 and 6,139.10

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Solution

The fourth proportional to 8,500.70, 11,718.63 and 6,139.10 is: 8,463.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,500.70 : 11,718.63 = 6,139.10 : x
  2. Step 2: Convert to fraction form
    8,500.70/11,718.63 = 6,139.10/x
  3. Step 3: Cross multiply
    8,500.70x = 11,718.63 × 6,139.10
  4. Step 4: Simplify right side
    8,500.70x = 71,941,841.43
  5. Step 5: Solve for x
    x = 71,941,841.43/8,500.70
  6. Step 6: Final answer
    x = 8,463.05

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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.