Home / 2,981.60-4,472.40-1,132.72

Finding the Fourth Proportional to 2,981.60, 4,472.40 and 1,132.72

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Solution

The fourth proportional to 2,981.60, 4,472.40 and 1,132.72 is: 1,699.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,981.60 : 4,472.40 = 1,132.72 : x
  2. Step 2: Convert to fraction form
    2,981.60/4,472.40 = 1,132.72/x
  3. Step 3: Cross multiply
    2,981.60x = 4,472.40 × 1,132.72
  4. Step 4: Simplify right side
    2,981.60x = 5,065,976.93
  5. Step 5: Solve for x
    x = 5,065,976.93/2,981.60
  6. Step 6: Final answer
    x = 1,699.08

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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.