Home / 2,132.38-2,941.92-1,247.68

Finding the Fourth Proportional to 2,132.38, 2,941.92 and 1,247.68

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Solution

The fourth proportional to 2,132.38, 2,941.92 and 1,247.68 is: 1,721.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,132.38 : 2,941.92 = 1,247.68 : x
  2. Step 2: Convert to fraction form
    2,132.38/2,941.92 = 1,247.68/x
  3. Step 3: Cross multiply
    2,132.38x = 2,941.92 × 1,247.68
  4. Step 4: Simplify right side
    2,132.38x = 3,670,574.75
  5. Step 5: Solve for x
    x = 3,670,574.75/2,132.38
  6. Step 6: Final answer
    x = 1,721.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.