Home / 3,248.40-4,481.88-2,129.16

Finding the Fourth Proportional to 3,248.40, 4,481.88 and 2,129.16

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Solution

The fourth proportional to 3,248.40, 4,481.88 and 2,129.16 is: 2,937.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,248.40 : 4,481.88 = 2,129.16 : x
  2. Step 2: Convert to fraction form
    3,248.40/4,481.88 = 2,129.16/x
  3. Step 3: Cross multiply
    3,248.40x = 4,481.88 × 2,129.16
  4. Step 4: Simplify right side
    3,248.40x = 9,542,639.62
  5. Step 5: Solve for x
    x = 9,542,639.62/3,248.40
  6. Step 6: Final answer
    x = 2,937.64

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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.