Home / 8,432.57-12,639.37-3,162.47

Finding the Fourth Proportional to 8,432.57, 12,639.37 and 3,162.47

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Solution

The fourth proportional to 8,432.57, 12,639.37 and 3,162.47 is: 4,740.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,432.57 : 12,639.37 = 3,162.47 : x
  2. Step 2: Convert to fraction form
    8,432.57/12,639.37 = 3,162.47/x
  3. Step 3: Cross multiply
    8,432.57x = 12,639.37 × 3,162.47
  4. Step 4: Simplify right side
    8,432.57x = 39,971,557.34
  5. Step 5: Solve for x
    x = 39,971,557.34/8,432.57
  6. Step 6: Final answer
    x = 4,740.14

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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.