Home / 3,387.48-5,078.12-1,631.40

Finding the Fourth Proportional to 3,387.48, 5,078.12 and 1,631.40

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Solution

The fourth proportional to 3,387.48, 5,078.12 and 1,631.40 is: 2,445.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,387.48 : 5,078.12 = 1,631.40 : x
  2. Step 2: Convert to fraction form
    3,387.48/5,078.12 = 1,631.40/x
  3. Step 3: Cross multiply
    3,387.48x = 5,078.12 × 1,631.40
  4. Step 4: Simplify right side
    3,387.48x = 8,284,444.97
  5. Step 5: Solve for x
    x = 8,284,444.97/3,387.48
  6. Step 6: Final answer
    x = 2,445.61

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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.