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Finding the Fourth Proportional to 8,699.49, 13,038.30 and 6,239.11

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Solution

The fourth proportional to 8,699.49, 13,038.30 and 6,239.11 is: 9,350.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,699.49 : 13,038.30 = 6,239.11 : x
  2. Step 2: Convert to fraction form
    8,699.49/13,038.30 = 6,239.11/x
  3. Step 3: Cross multiply
    8,699.49x = 13,038.30 × 6,239.11
  4. Step 4: Simplify right side
    8,699.49x = 81,347,387.91
  5. Step 5: Solve for x
    x = 81,347,387.91/8,699.49
  6. Step 6: Final answer
    x = 9,350.82

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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.