Home / 3,439.56-5,155.28-1,487.64

Finding the Fourth Proportional to 3,439.56, 5,155.28 and 1,487.64

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Solution

The fourth proportional to 3,439.56, 5,155.28 and 1,487.64 is: 2,229.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,439.56 : 5,155.28 = 1,487.64 : x
  2. Step 2: Convert to fraction form
    3,439.56/5,155.28 = 1,487.64/x
  3. Step 3: Cross multiply
    3,439.56x = 5,155.28 × 1,487.64
  4. Step 4: Simplify right side
    3,439.56x = 7,669,200.74
  5. Step 5: Solve for x
    x = 7,669,200.74/3,439.56
  6. Step 6: Final answer
    x = 2,229.70

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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.