Home / 2,815.13-4,221.33-1,058.76

Finding the Fourth Proportional to 2,815.13, 4,221.33 and 1,058.76

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Solution

The fourth proportional to 2,815.13, 4,221.33 and 1,058.76 is: 1,587.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.13 : 4,221.33 = 1,058.76 : x
  2. Step 2: Convert to fraction form
    2,815.13/4,221.33 = 1,058.76/x
  3. Step 3: Cross multiply
    2,815.13x = 4,221.33 × 1,058.76
  4. Step 4: Simplify right side
    2,815.13x = 4,469,375.35
  5. Step 5: Solve for x
    x = 4,469,375.35/2,815.13
  6. Step 6: Final answer
    x = 1,587.63

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1.5x scale

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.