Home / 3,660.52-5,490.12-1,320.04

Finding the Fourth Proportional to 3,660.52, 5,490.12 and 1,320.04

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Solution

The fourth proportional to 3,660.52, 5,490.12 and 1,320.04 is: 1,979.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,660.52 : 5,490.12 = 1,320.04 : x
  2. Step 2: Convert to fraction form
    3,660.52/5,490.12 = 1,320.04/x
  3. Step 3: Cross multiply
    3,660.52x = 5,490.12 × 1,320.04
  4. Step 4: Simplify right side
    3,660.52x = 7,247,178.00
  5. Step 5: Solve for x
    x = 7,247,178.00/3,660.52
  6. Step 6: Final answer
    x = 1,979.82

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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.