Home / 6,247.38-8,621.40-3,414.78

Finding the Fourth Proportional to 6,247.38, 8,621.40 and 3,414.78

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Solution

The fourth proportional to 6,247.38, 8,621.40 and 3,414.78 is: 4,712.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,247.38 : 8,621.40 = 3,414.78 : x
  2. Step 2: Convert to fraction form
    6,247.38/8,621.40 = 3,414.78/x
  3. Step 3: Cross multiply
    6,247.38x = 8,621.40 × 3,414.78
  4. Step 4: Simplify right side
    6,247.38x = 29,440,184.29
  5. Step 5: Solve for x
    x = 29,440,184.29/6,247.38
  6. Step 6: Final answer
    x = 4,712.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.