Home / 2,123.20-2,928.92-1,532.71

Finding the Fourth Proportional to 2,123.20, 2,928.92 and 1,532.71

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Solution

The fourth proportional to 2,123.20, 2,928.92 and 1,532.71 is: 2,114.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,123.20 : 2,928.92 = 1,532.71 : x
  2. Step 2: Convert to fraction form
    2,123.20/2,928.92 = 1,532.71/x
  3. Step 3: Cross multiply
    2,123.20x = 2,928.92 × 1,532.71
  4. Step 4: Simplify right side
    2,123.20x = 4,489,184.97
  5. Step 5: Solve for x
    x = 4,489,184.97/2,123.20
  6. Step 6: Final answer
    x = 2,114.35

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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.