Home / 1,331.76-2,007.61-1,242.56

Finding the Fourth Proportional to 1,331.76, 2,007.61 and 1,242.56

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Solution

The fourth proportional to 1,331.76, 2,007.61 and 1,242.56 is: 1,873.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331.76 : 2,007.61 = 1,242.56 : x
  2. Step 2: Convert to fraction form
    1,331.76/2,007.61 = 1,242.56/x
  3. Step 3: Cross multiply
    1,331.76x = 2,007.61 × 1,242.56
  4. Step 4: Simplify right side
    1,331.76x = 2,494,569.67
  5. Step 5: Solve for x
    x = 2,494,569.67/1,331.76
  6. Step 6: Final answer
    x = 1,873.14

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.