Home / 2,216.88-3,058.24-1,431.20

Finding the Fourth Proportional to 2,216.88, 3,058.24 and 1,431.20

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Solution

The fourth proportional to 2,216.88, 3,058.24 and 1,431.20 is: 1,974.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,216.88 : 3,058.24 = 1,431.20 : x
  2. Step 2: Convert to fraction form
    2,216.88/3,058.24 = 1,431.20/x
  3. Step 3: Cross multiply
    2,216.88x = 3,058.24 × 1,431.20
  4. Step 4: Simplify right side
    2,216.88x = 4,376,953.09
  5. Step 5: Solve for x
    x = 4,376,953.09/2,216.88
  6. Step 6: Final answer
    x = 1,974.38

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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.