Home / 1,488.11-2,052.34-1,291.28

Finding the Fourth Proportional to 1,488.11, 2,052.34 and 1,291.28

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Solution

The fourth proportional to 1,488.11, 2,052.34 and 1,291.28 is: 1,780.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,488.11 : 2,052.34 = 1,291.28 : x
  2. Step 2: Convert to fraction form
    1,488.11/2,052.34 = 1,291.28/x
  3. Step 3: Cross multiply
    1,488.11x = 2,052.34 × 1,291.28
  4. Step 4: Simplify right side
    1,488.11x = 2,650,132.11
  5. Step 5: Solve for x
    x = 2,650,132.11/1,488.11
  6. Step 6: Final answer
    x = 1,780.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.