Home / 1,251.32-1,722.28-1,152.90

Finding the Fourth Proportional to 1,251.32, 1,722.28 and 1,152.90

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Solution

The fourth proportional to 1,251.32, 1,722.28 and 1,152.90 is: 1,586.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,251.32 : 1,722.28 = 1,152.90 : x
  2. Step 2: Convert to fraction form
    1,251.32/1,722.28 = 1,152.90/x
  3. Step 3: Cross multiply
    1,251.32x = 1,722.28 × 1,152.90
  4. Step 4: Simplify right side
    1,251.32x = 1,985,616.61
  5. Step 5: Solve for x
    x = 1,985,616.61/1,251.32
  6. Step 6: Final answer
    x = 1,586.82

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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.