Home / 1,278.29-1,924.17-1,090.37

Finding the Fourth Proportional to 1,278.29, 1,924.17 and 1,090.37

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Solution

The fourth proportional to 1,278.29, 1,924.17 and 1,090.37 is: 1,641.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278.29 : 1,924.17 = 1,090.37 : x
  2. Step 2: Convert to fraction form
    1,278.29/1,924.17 = 1,090.37/x
  3. Step 3: Cross multiply
    1,278.29x = 1,924.17 × 1,090.37
  4. Step 4: Simplify right side
    1,278.29x = 2,098,047.62
  5. Step 5: Solve for x
    x = 2,098,047.62/1,278.29
  6. Step 6: Final answer
    x = 1,641.30

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.