Home / 2,359.12-3,540.05-972.20

Finding the Fourth Proportional to 2,359.12, 3,540.05 and 972.20

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Solution

The fourth proportional to 2,359.12, 3,540.05 and 972.20 is: 1,458.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,359.12 : 3,540.05 = 972.20 : x
  2. Step 2: Convert to fraction form
    2,359.12/3,540.05 = 972.20/x
  3. Step 3: Cross multiply
    2,359.12x = 3,540.05 × 972.20
  4. Step 4: Simplify right side
    2,359.12x = 3,441,614.05
  5. Step 5: Solve for x
    x = 3,441,614.05/2,359.12
  6. Step 6: Final answer
    x = 1,458.86

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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.