Home / 8,287.40-12,439.20-4,132.10

Finding the Fourth Proportional to 8,287.40, 12,439.20 and 4,132.10

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Solution

The fourth proportional to 8,287.40, 12,439.20 and 4,132.10 is: 6,202.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,287.40 : 12,439.20 = 4,132.10 : x
  2. Step 2: Convert to fraction form
    8,287.40/12,439.20 = 4,132.10/x
  3. Step 3: Cross multiply
    8,287.40x = 12,439.20 × 4,132.10
  4. Step 4: Simplify right side
    8,287.40x = 51,400,018.32
  5. Step 5: Solve for x
    x = 51,400,018.32/8,287.40
  6. Step 6: Final answer
    x = 6,202.19

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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.