Home / 2,132.46-2,942.33-1,247.85

Finding the Fourth Proportional to 2,132.46, 2,942.33 and 1,247.85

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Solution

The fourth proportional to 2,132.46, 2,942.33 and 1,247.85 is: 1,721.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,132.46 : 2,942.33 = 1,247.85 : x
  2. Step 2: Convert to fraction form
    2,132.46/2,942.33 = 1,247.85/x
  3. Step 3: Cross multiply
    2,132.46x = 2,942.33 × 1,247.85
  4. Step 4: Simplify right side
    2,132.46x = 3,671,580.25
  5. Step 5: Solve for x
    x = 3,671,580.25/2,132.46
  6. Step 6: Final answer
    x = 1,721.76

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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.