Home / 1,903.19-2,854.80-748.13

Finding the Fourth Proportional to 1,903.19, 2,854.80 and 748.13

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Solution

The fourth proportional to 1,903.19, 2,854.80 and 748.13 is: 1,122.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,903.19 : 2,854.80 = 748.13 : x
  2. Step 2: Convert to fraction form
    1,903.19/2,854.80 = 748.13/x
  3. Step 3: Cross multiply
    1,903.19x = 2,854.80 × 748.13
  4. Step 4: Simplify right side
    1,903.19x = 2,135,747.25
  5. Step 5: Solve for x
    x = 2,135,747.25/1,903.19
  6. Step 6: Final answer
    x = 1,122.20

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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.