Home / 8,374.29-12,558.11-3,988.68

Finding the Fourth Proportional to 8,374.29, 12,558.11 and 3,988.68

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Solution

The fourth proportional to 8,374.29, 12,558.11 and 3,988.68 is: 5,981.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,374.29 : 12,558.11 = 3,988.68 : x
  2. Step 2: Convert to fraction form
    8,374.29/12,558.11 = 3,988.68/x
  3. Step 3: Cross multiply
    8,374.29x = 12,558.11 × 3,988.68
  4. Step 4: Simplify right side
    8,374.29x = 50,090,215.16
  5. Step 5: Solve for x
    x = 50,090,215.16/8,374.29
  6. Step 6: Final answer
    x = 5,981.43

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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.