Home / 1,437.20-1,982.40-1,174.80

Finding the Fourth Proportional to 1,437.20, 1,982.40 and 1,174.80

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Solution

The fourth proportional to 1,437.20, 1,982.40 and 1,174.80 is: 1,620.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,437.20 : 1,982.40 = 1,174.80 : x
  2. Step 2: Convert to fraction form
    1,437.20/1,982.40 = 1,174.80/x
  3. Step 3: Cross multiply
    1,437.20x = 1,982.40 × 1,174.80
  4. Step 4: Simplify right side
    1,437.20x = 2,328,923.52
  5. Step 5: Solve for x
    x = 2,328,923.52/1,437.20
  6. Step 6: Final answer
    x = 1,620.46

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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.