Home / 8,384.28-12,572.40-3,117.60

Finding the Fourth Proportional to 8,384.28, 12,572.40 and 3,117.60

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Solution

The fourth proportional to 8,384.28, 12,572.40 and 3,117.60 is: 4,674.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,384.28 : 12,572.40 = 3,117.60 : x
  2. Step 2: Convert to fraction form
    8,384.28/12,572.40 = 3,117.60/x
  3. Step 3: Cross multiply
    8,384.28x = 12,572.40 × 3,117.60
  4. Step 4: Simplify right side
    8,384.28x = 39,195,714.24
  5. Step 5: Solve for x
    x = 39,195,714.24/8,384.28
  6. Step 6: Final answer
    x = 4,674.91

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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.