Home / 7,439.52-11,159.28-3,278.64

Finding the Fourth Proportional to 7,439.52, 11,159.28 and 3,278.64

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Solution

The fourth proportional to 7,439.52, 11,159.28 and 3,278.64 is: 4,917.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,439.52 : 11,159.28 = 3,278.64 : x
  2. Step 2: Convert to fraction form
    7,439.52/11,159.28 = 3,278.64/x
  3. Step 3: Cross multiply
    7,439.52x = 11,159.28 × 3,278.64
  4. Step 4: Simplify right side
    7,439.52x = 36,587,261.78
  5. Step 5: Solve for x
    x = 36,587,261.78/7,439.52
  6. Step 6: Final answer
    x = 4,917.96

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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.