Home / 1,177.72-1,621.56-1,000.31

Finding the Fourth Proportional to 1,177.72, 1,621.56 and 1,000.31

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Solution

The fourth proportional to 1,177.72, 1,621.56 and 1,000.31 is: 1,377.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,177.72 : 1,621.56 = 1,000.31 : x
  2. Step 2: Convert to fraction form
    1,177.72/1,621.56 = 1,000.31/x
  3. Step 3: Cross multiply
    1,177.72x = 1,621.56 × 1,000.31
  4. Step 4: Simplify right side
    1,177.72x = 1,622,062.68
  5. Step 5: Solve for x
    x = 1,622,062.68/1,177.72
  6. Step 6: Final answer
    x = 1,377.29

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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.