Home / 1,427.33-2,140.90-453.17

Finding the Fourth Proportional to 1,427.33, 2,140.90 and 453.17

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Solution

The fourth proportional to 1,427.33, 2,140.90 and 453.17 is: 679.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427.33 : 2,140.90 = 453.17 : x
  2. Step 2: Convert to fraction form
    1,427.33/2,140.90 = 453.17/x
  3. Step 3: Cross multiply
    1,427.33x = 2,140.90 × 453.17
  4. Step 4: Simplify right side
    1,427.33x = 970,191.65
  5. Step 5: Solve for x
    x = 970,191.65/1,427.33
  6. Step 6: Final answer
    x = 679.72

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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.