Home / 1,400.42-1,932.98-1,122.60

Finding the Fourth Proportional to 1,400.42, 1,932.98 and 1,122.60

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Solution

The fourth proportional to 1,400.42, 1,932.98 and 1,122.60 is: 1,549.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400.42 : 1,932.98 = 1,122.60 : x
  2. Step 2: Convert to fraction form
    1,400.42/1,932.98 = 1,122.60/x
  3. Step 3: Cross multiply
    1,400.42x = 1,932.98 × 1,122.60
  4. Step 4: Simplify right side
    1,400.42x = 2,169,963.35
  5. Step 5: Solve for x
    x = 2,169,963.35/1,400.42
  6. Step 6: Final answer
    x = 1,549.51

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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.