Home / 1,126.04-1,551.11-939.47

Finding the Fourth Proportional to 1,126.04, 1,551.11 and 939.47

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Solution

The fourth proportional to 1,126.04, 1,551.11 and 939.47 is: 1,294.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.04 : 1,551.11 = 939.47 : x
  2. Step 2: Convert to fraction form
    1,126.04/1,551.11 = 939.47/x
  3. Step 3: Cross multiply
    1,126.04x = 1,551.11 × 939.47
  4. Step 4: Simplify right side
    1,126.04x = 1,457,208.86
  5. Step 5: Solve for x
    x = 1,457,208.86/1,126.04
  6. Step 6: Final answer
    x = 1,294.11

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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.