Home / 1,422.60-2,129.76-1,203.24

Finding the Fourth Proportional to 1,422.60, 2,129.76 and 1,203.24

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Solution

The fourth proportional to 1,422.60, 2,129.76 and 1,203.24 is: 1,801.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,422.60 : 2,129.76 = 1,203.24 : x
  2. Step 2: Convert to fraction form
    1,422.60/2,129.76 = 1,203.24/x
  3. Step 3: Cross multiply
    1,422.60x = 2,129.76 × 1,203.24
  4. Step 4: Simplify right side
    1,422.60x = 2,562,612.42
  5. Step 5: Solve for x
    x = 2,562,612.42/1,422.60
  6. Step 6: Final answer
    x = 1,801.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.