Home / 6,385.20-9,581.40-2,489.10

Finding the Fourth Proportional to 6,385.20, 9,581.40 and 2,489.10

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Solution

The fourth proportional to 6,385.20, 9,581.40 and 2,489.10 is: 3,735.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,385.20 : 9,581.40 = 2,489.10 : x
  2. Step 2: Convert to fraction form
    6,385.20/9,581.40 = 2,489.10/x
  3. Step 3: Cross multiply
    6,385.20x = 9,581.40 × 2,489.10
  4. Step 4: Simplify right side
    6,385.20x = 23,849,062.74
  5. Step 5: Solve for x
    x = 23,849,062.74/6,385.20
  6. Step 6: Final answer
    x = 3,735.05

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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.