Home / 5,439.52-8,160.72-1,977.12

Finding the Fourth Proportional to 5,439.52, 8,160.72 and 1,977.12

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Solution

The fourth proportional to 5,439.52, 8,160.72 and 1,977.12 is: 2,966.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,439.52 : 8,160.72 = 1,977.12 : x
  2. Step 2: Convert to fraction form
    5,439.52/8,160.72 = 1,977.12/x
  3. Step 3: Cross multiply
    5,439.52x = 8,160.72 × 1,977.12
  4. Step 4: Simplify right side
    5,439.52x = 16,134,722.73
  5. Step 5: Solve for x
    x = 16,134,722.73/5,439.52
  6. Step 6: Final answer
    x = 2,966.20

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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.