Home / 1,223.31-1,682.85-1,073.28

Finding the Fourth Proportional to 1,223.31, 1,682.85 and 1,073.28

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Solution

The fourth proportional to 1,223.31, 1,682.85 and 1,073.28 is: 1,476.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223.31 : 1,682.85 = 1,073.28 : x
  2. Step 2: Convert to fraction form
    1,223.31/1,682.85 = 1,073.28/x
  3. Step 3: Cross multiply
    1,223.31x = 1,682.85 × 1,073.28
  4. Step 4: Simplify right side
    1,223.31x = 1,806,169.25
  5. Step 5: Solve for x
    x = 1,806,169.25/1,223.31
  6. Step 6: Final answer
    x = 1,476.46

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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.