Home / 1,621.29-2,237.39-922.66

Finding the Fourth Proportional to 1,621.29, 2,237.39 and 922.66

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Solution

The fourth proportional to 1,621.29, 2,237.39 and 922.66 is: 1,273.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.29 : 2,237.39 = 922.66 : x
  2. Step 2: Convert to fraction form
    1,621.29/2,237.39 = 922.66/x
  3. Step 3: Cross multiply
    1,621.29x = 2,237.39 × 922.66
  4. Step 4: Simplify right side
    1,621.29x = 2,064,351.24
  5. Step 5: Solve for x
    x = 2,064,351.24/1,621.29
  6. Step 6: Final answer
    x = 1,273.28

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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.