Home / 1,621.56-2,238.02-922.92

Finding the Fourth Proportional to 1,621.56, 2,238.02 and 922.92

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Solution

The fourth proportional to 1,621.56, 2,238.02 and 922.92 is: 1,273.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.56 : 2,238.02 = 922.92 : x
  2. Step 2: Convert to fraction form
    1,621.56/2,238.02 = 922.92/x
  3. Step 3: Cross multiply
    1,621.56x = 2,238.02 × 922.92
  4. Step 4: Simplify right side
    1,621.56x = 2,065,513.42
  5. Step 5: Solve for x
    x = 2,065,513.42/1,621.56
  6. Step 6: Final answer
    x = 1,273.78

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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.