Home / 1,557.03-2,147.98-997.23

Finding the Fourth Proportional to 1,557.03, 2,147.98 and 997.23

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Solution

The fourth proportional to 1,557.03, 2,147.98 and 997.23 is: 1,375.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,557.03 : 2,147.98 = 997.23 : x
  2. Step 2: Convert to fraction form
    1,557.03/2,147.98 = 997.23/x
  3. Step 3: Cross multiply
    1,557.03x = 2,147.98 × 997.23
  4. Step 4: Simplify right side
    1,557.03x = 2,142,027.60
  5. Step 5: Solve for x
    x = 2,142,027.60/1,557.03
  6. Step 6: Final answer
    x = 1,375.71

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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.