Home / 8,478.73-12,721.96-4,316.59

Finding the Fourth Proportional to 8,478.73, 12,721.96 and 4,316.59

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Solution

The fourth proportional to 8,478.73, 12,721.96 and 4,316.59 is: 6,476.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,478.73 : 12,721.96 = 4,316.59 : x
  2. Step 2: Convert to fraction form
    8,478.73/12,721.96 = 4,316.59/x
  3. Step 3: Cross multiply
    8,478.73x = 12,721.96 × 4,316.59
  4. Step 4: Simplify right side
    8,478.73x = 54,915,506.61
  5. Step 5: Solve for x
    x = 54,915,506.61/8,478.73
  6. Step 6: Final answer
    x = 6,476.86

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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.