Home / 2,152.52-3,228.75-1,421.92

Finding the Fourth Proportional to 2,152.52, 3,228.75 and 1,421.92

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Solution

The fourth proportional to 2,152.52, 3,228.75 and 1,421.92 is: 2,132.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,152.52 : 3,228.75 = 1,421.92 : x
  2. Step 2: Convert to fraction form
    2,152.52/3,228.75 = 1,421.92/x
  3. Step 3: Cross multiply
    2,152.52x = 3,228.75 × 1,421.92
  4. Step 4: Simplify right side
    2,152.52x = 4,591,024.20
  5. Step 5: Solve for x
    x = 4,591,024.20/2,152.52
  6. Step 6: Final answer
    x = 2,132.86

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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.