Home / 1,508.87-2,079.11-1,212.95

Finding the Fourth Proportional to 1,508.87, 2,079.11 and 1,212.95

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Solution

The fourth proportional to 1,508.87, 2,079.11 and 1,212.95 is: 1,671.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,508.87 : 2,079.11 = 1,212.95 : x
  2. Step 2: Convert to fraction form
    1,508.87/2,079.11 = 1,212.95/x
  3. Step 3: Cross multiply
    1,508.87x = 2,079.11 × 1,212.95
  4. Step 4: Simplify right side
    1,508.87x = 2,521,849.11
  5. Step 5: Solve for x
    x = 2,521,849.11/1,508.87
  6. Step 6: Final answer
    x = 1,671.36

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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.