Home / 1,487.74-2,227.46-1,121.42

Finding the Fourth Proportional to 1,487.74, 2,227.46 and 1,121.42

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Solution

The fourth proportional to 1,487.74, 2,227.46 and 1,121.42 is: 1,679.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,487.74 : 2,227.46 = 1,121.42 : x
  2. Step 2: Convert to fraction form
    1,487.74/2,227.46 = 1,121.42/x
  3. Step 3: Cross multiply
    1,487.74x = 2,227.46 × 1,121.42
  4. Step 4: Simplify right side
    1,487.74x = 2,497,918.19
  5. Step 5: Solve for x
    x = 2,497,918.19/1,487.74
  6. Step 6: Final answer
    x = 1,679.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.