Home / 1,508.82-2,079.68-1,011.28

Finding the Fourth Proportional to 1,508.82, 2,079.68 and 1,011.28

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Solution

The fourth proportional to 1,508.82, 2,079.68 and 1,011.28 is: 1,393.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,508.82 : 2,079.68 = 1,011.28 : x
  2. Step 2: Convert to fraction form
    1,508.82/2,079.68 = 1,011.28/x
  3. Step 3: Cross multiply
    1,508.82x = 2,079.68 × 1,011.28
  4. Step 4: Simplify right side
    1,508.82x = 2,103,138.79
  5. Step 5: Solve for x
    x = 2,103,138.79/1,508.82
  6. Step 6: Final answer
    x = 1,393.90

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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.