Home / 1,248.36-1,871.08-939.22

Finding the Fourth Proportional to 1,248.36, 1,871.08 and 939.22

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Solution

The fourth proportional to 1,248.36, 1,871.08 and 939.22 is: 1,407.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,248.36 : 1,871.08 = 939.22 : x
  2. Step 2: Convert to fraction form
    1,248.36/1,871.08 = 939.22/x
  3. Step 3: Cross multiply
    1,248.36x = 1,871.08 × 939.22
  4. Step 4: Simplify right side
    1,248.36x = 1,757,341.71
  5. Step 5: Solve for x
    x = 1,757,341.71/1,248.36
  6. Step 6: Final answer
    x = 1,407.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.