Home / 10,655.60-15,979.92-3,728.48

Finding the Fourth Proportional to 10,655.60, 15,979.92 and 3,728.48

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Solution

The fourth proportional to 10,655.60, 15,979.92 and 3,728.48 is: 5,591.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,655.60 : 15,979.92 = 3,728.48 : x
  2. Step 2: Convert to fraction form
    10,655.60/15,979.92 = 3,728.48/x
  3. Step 3: Cross multiply
    10,655.60x = 15,979.92 × 3,728.48
  4. Step 4: Simplify right side
    10,655.60x = 59,580,812.12
  5. Step 5: Solve for x
    x = 59,580,812.12/10,655.60
  6. Step 6: Final answer
    x = 5,591.50

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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.