Home / 2,217.28-3,058.49-1,320.42

Finding the Fourth Proportional to 2,217.28, 3,058.49 and 1,320.42

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Solution

The fourth proportional to 2,217.28, 3,058.49 and 1,320.42 is: 1,821.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.28 : 3,058.49 = 1,320.42 : x
  2. Step 2: Convert to fraction form
    2,217.28/3,058.49 = 1,320.42/x
  3. Step 3: Cross multiply
    2,217.28x = 3,058.49 × 1,320.42
  4. Step 4: Simplify right side
    2,217.28x = 4,038,506.14
  5. Step 5: Solve for x
    x = 4,038,506.14/2,217.28
  6. Step 6: Final answer
    x = 1,821.38

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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.