Home / 3,058.49-4,219.17-2,115.20

Finding the Fourth Proportional to 3,058.49, 4,219.17 and 2,115.20

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Solution

The fourth proportional to 3,058.49, 4,219.17 and 2,115.20 is: 2,917.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,058.49 : 4,219.17 = 2,115.20 : x
  2. Step 2: Convert to fraction form
    3,058.49/4,219.17 = 2,115.20/x
  3. Step 3: Cross multiply
    3,058.49x = 4,219.17 × 2,115.20
  4. Step 4: Simplify right side
    3,058.49x = 8,924,388.38
  5. Step 5: Solve for x
    x = 8,924,388.38/3,058.49
  6. Step 6: Final answer
    x = 2,917.91

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Half scale
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Double scale
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1.5x scale

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.