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Finding the Fourth Proportional to 8,637, 12,937.84 and 4,240.68

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Solution

The fourth proportional to 8,637, 12,937.84 and 4,240.68 is: 6,352.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,637 : 12,937.84 = 4,240.68 : x
  2. Step 2: Convert to fraction form
    8,637/12,937.84 = 4,240.68/x
  3. Step 3: Cross multiply
    8,637x = 12,937.84 × 4,240.68
  4. Step 4: Simplify right side
    8,637x = 54,865,239.33
  5. Step 5: Solve for x
    x = 54,865,239.33/8,637
  6. Step 6: Final answer
    x = 6,352.35

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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.