Home / 1,126.36-1,554.50-660.60

Finding the Fourth Proportional to 1,126.36, 1,554.50 and 660.60

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Solution

The fourth proportional to 1,126.36, 1,554.50 and 660.60 is: 911.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.36 : 1,554.50 = 660.60 : x
  2. Step 2: Convert to fraction form
    1,126.36/1,554.50 = 660.60/x
  3. Step 3: Cross multiply
    1,126.36x = 1,554.50 × 660.60
  4. Step 4: Simplify right side
    1,126.36x = 1,026,902.70
  5. Step 5: Solve for x
    x = 1,026,902.70/1,126.36
  6. Step 6: Final answer
    x = 911.70

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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.