Home / 2,753.28-4,129.52-1,021.50

Finding the Fourth Proportional to 2,753.28, 4,129.52 and 1,021.50

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Solution

The fourth proportional to 2,753.28, 4,129.52 and 1,021.50 is: 1,532.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,753.28 : 4,129.52 = 1,021.50 : x
  2. Step 2: Convert to fraction form
    2,753.28/4,129.52 = 1,021.50/x
  3. Step 3: Cross multiply
    2,753.28x = 4,129.52 × 1,021.50
  4. Step 4: Simplify right side
    2,753.28x = 4,218,299.57
  5. Step 5: Solve for x
    x = 4,218,299.57/2,753.28
  6. Step 6: Final answer
    x = 1,532.10

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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.