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Finding the Fourth Proportional to 8,710.84, 12,020.25 and 5,125.92

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Solution

The fourth proportional to 8,710.84, 12,020.25 and 5,125.92 is: 7,073.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,710.84 : 12,020.25 = 5,125.92 : x
  2. Step 2: Convert to fraction form
    8,710.84/12,020.25 = 5,125.92/x
  3. Step 3: Cross multiply
    8,710.84x = 12,020.25 × 5,125.92
  4. Step 4: Simplify right side
    8,710.84x = 61,614,839.88
  5. Step 5: Solve for x
    x = 61,614,839.88/8,710.84
  6. Step 6: Final answer
    x = 7,073.35

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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.