Home / 1,292.27-1,938.54-414.55

Finding the Fourth Proportional to 1,292.27, 1,938.54 and 414.55

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Solution

The fourth proportional to 1,292.27, 1,938.54 and 414.55 is: 621.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292.27 : 1,938.54 = 414.55 : x
  2. Step 2: Convert to fraction form
    1,292.27/1,938.54 = 414.55/x
  3. Step 3: Cross multiply
    1,292.27x = 1,938.54 × 414.55
  4. Step 4: Simplify right side
    1,292.27x = 803,621.76
  5. Step 5: Solve for x
    x = 803,621.76/1,292.27
  6. Step 6: Final answer
    x = 621.87

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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.