Home / 8,312.28-12,470.77-3,385.46

Finding the Fourth Proportional to 8,312.28, 12,470.77 and 3,385.46

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Solution

The fourth proportional to 8,312.28, 12,470.77 and 3,385.46 is: 5,079.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,312.28 : 12,470.77 = 3,385.46 : x
  2. Step 2: Convert to fraction form
    8,312.28/12,470.77 = 3,385.46/x
  3. Step 3: Cross multiply
    8,312.28x = 12,470.77 × 3,385.46
  4. Step 4: Simplify right side
    8,312.28x = 42,219,233.54
  5. Step 5: Solve for x
    x = 42,219,233.54/8,312.28
  6. Step 6: Final answer
    x = 5,079.14

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1.5x scale

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.