Home / 1,254.11-1,871.71-1,149.54

Finding the Fourth Proportional to 1,254.11, 1,871.71 and 1,149.54

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Solution

The fourth proportional to 1,254.11, 1,871.71 and 1,149.54 is: 1,715.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,254.11 : 1,871.71 = 1,149.54 : x
  2. Step 2: Convert to fraction form
    1,254.11/1,871.71 = 1,149.54/x
  3. Step 3: Cross multiply
    1,254.11x = 1,871.71 × 1,149.54
  4. Step 4: Simplify right side
    1,254.11x = 2,151,606.15
  5. Step 5: Solve for x
    x = 2,151,606.15/1,254.11
  6. Step 6: Final answer
    x = 1,715.65

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.