Home / 1,122.90-1,551.52-1,083.48

Finding the Fourth Proportional to 1,122.90, 1,551.52 and 1,083.48

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Solution

The fourth proportional to 1,122.90, 1,551.52 and 1,083.48 is: 1,497.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,122.90 : 1,551.52 = 1,083.48 : x
  2. Step 2: Convert to fraction form
    1,122.90/1,551.52 = 1,083.48/x
  3. Step 3: Cross multiply
    1,122.90x = 1,551.52 × 1,083.48
  4. Step 4: Simplify right side
    1,122.90x = 1,681,040.89
  5. Step 5: Solve for x
    x = 1,681,040.89/1,122.90
  6. Step 6: Final answer
    x = 1,497.05

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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.