Home / 2,391.20-3,586.56-660.08

Finding the Fourth Proportional to 2,391.20, 3,586.56 and 660.08

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Solution

The fourth proportional to 2,391.20, 3,586.56 and 660.08 is: 990.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,391.20 : 3,586.56 = 660.08 : x
  2. Step 2: Convert to fraction form
    2,391.20/3,586.56 = 660.08/x
  3. Step 3: Cross multiply
    2,391.20x = 3,586.56 × 660.08
  4. Step 4: Simplify right side
    2,391.20x = 2,367,416.52
  5. Step 5: Solve for x
    x = 2,367,416.52/2,391.20
  6. Step 6: Final answer
    x = 990.05

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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.