Home / 1,252.20-1,866.35-1,122.34

Finding the Fourth Proportional to 1,252.20, 1,866.35 and 1,122.34

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Solution

The fourth proportional to 1,252.20, 1,866.35 and 1,122.34 is: 1,672.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,252.20 : 1,866.35 = 1,122.34 : x
  2. Step 2: Convert to fraction form
    1,252.20/1,866.35 = 1,122.34/x
  3. Step 3: Cross multiply
    1,252.20x = 1,866.35 × 1,122.34
  4. Step 4: Simplify right side
    1,252.20x = 2,094,679.26
  5. Step 5: Solve for x
    x = 2,094,679.26/1,252.20
  6. Step 6: Final answer
    x = 1,672.80

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.