Home / 6,419.57-8,861.10-3,766.91

Finding the Fourth Proportional to 6,419.57, 8,861.10 and 3,766.91

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Solution

The fourth proportional to 6,419.57, 8,861.10 and 3,766.91 is: 5,199.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,419.57 : 8,861.10 = 3,766.91 : x
  2. Step 2: Convert to fraction form
    6,419.57/8,861.10 = 3,766.91/x
  3. Step 3: Cross multiply
    6,419.57x = 8,861.10 × 3,766.91
  4. Step 4: Simplify right side
    6,419.57x = 33,378,966.20
  5. Step 5: Solve for x
    x = 33,378,966.20/6,419.57
  6. Step 6: Final answer
    x = 5,199.56

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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.