Home / 1,204.52-1,663.40-939.70

Finding the Fourth Proportional to 1,204.52, 1,663.40 and 939.70

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Solution

The fourth proportional to 1,204.52, 1,663.40 and 939.70 is: 1,297.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,204.52 : 1,663.40 = 939.70 : x
  2. Step 2: Convert to fraction form
    1,204.52/1,663.40 = 939.70/x
  3. Step 3: Cross multiply
    1,204.52x = 1,663.40 × 939.70
  4. Step 4: Simplify right side
    1,204.52x = 1,563,096.98
  5. Step 5: Solve for x
    x = 1,563,096.98/1,204.52
  6. Step 6: Final answer
    x = 1,297.69

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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.