Home / 8,478.27-12,716.06-2,931.80

Finding the Fourth Proportional to 8,478.27, 12,716.06 and 2,931.80

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Solution

The fourth proportional to 8,478.27, 12,716.06 and 2,931.80 is: 4,397.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,478.27 : 12,716.06 = 2,931.80 : x
  2. Step 2: Convert to fraction form
    8,478.27/12,716.06 = 2,931.80/x
  3. Step 3: Cross multiply
    8,478.27x = 12,716.06 × 2,931.80
  4. Step 4: Simplify right side
    8,478.27x = 37,280,866.47
  5. Step 5: Solve for x
    x = 37,280,866.47/8,478.27
  6. Step 6: Final answer
    x = 4,397.23

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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.