Home / 1,177.98-1,621.90-1,000.56

Finding the Fourth Proportional to 1,177.98, 1,621.90 and 1,000.56

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Solution

The fourth proportional to 1,177.98, 1,621.90 and 1,000.56 is: 1,377.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,177.98 : 1,621.90 = 1,000.56 : x
  2. Step 2: Convert to fraction form
    1,177.98/1,621.90 = 1,000.56/x
  3. Step 3: Cross multiply
    1,177.98x = 1,621.90 × 1,000.56
  4. Step 4: Simplify right side
    1,177.98x = 1,622,808.26
  5. Step 5: Solve for x
    x = 1,622,808.26/1,177.98
  6. Step 6: Final answer
    x = 1,377.62

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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.