Home / 8,478.08-12,717.68-2,931.96

Finding the Fourth Proportional to 8,478.08, 12,717.68 and 2,931.96

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Solution

The fourth proportional to 8,478.08, 12,717.68 and 2,931.96 is: 4,398.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,478.08 : 12,717.68 = 2,931.96 : x
  2. Step 2: Convert to fraction form
    8,478.08/12,717.68 = 2,931.96/x
  3. Step 3: Cross multiply
    8,478.08x = 12,717.68 × 2,931.96
  4. Step 4: Simplify right side
    8,478.08x = 37,287,729.05
  5. Step 5: Solve for x
    x = 37,287,729.05/8,478.08
  6. Step 6: Final answer
    x = 4,398.13

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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.