Home / 1,146.27-1,581.85-622.30

Finding the Fourth Proportional to 1,146.27, 1,581.85 and 622.30

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Solution

The fourth proportional to 1,146.27, 1,581.85 and 622.30 is: 858.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,146.27 : 1,581.85 = 622.30 : x
  2. Step 2: Convert to fraction form
    1,146.27/1,581.85 = 622.30/x
  3. Step 3: Cross multiply
    1,146.27x = 1,581.85 × 622.30
  4. Step 4: Simplify right side
    1,146.27x = 984,385.04
  5. Step 5: Solve for x
    x = 984,385.04/1,146.27
  6. Step 6: Final answer
    x = 858.77

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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.