Home / 2,138.47-3,205.50-1,359.04

Finding the Fourth Proportional to 2,138.47, 3,205.50 and 1,359.04

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Solution

The fourth proportional to 2,138.47, 3,205.50 and 1,359.04 is: 2,037.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138.47 : 3,205.50 = 1,359.04 : x
  2. Step 2: Convert to fraction form
    2,138.47/3,205.50 = 1,359.04/x
  3. Step 3: Cross multiply
    2,138.47x = 3,205.50 × 1,359.04
  4. Step 4: Simplify right side
    2,138.47x = 4,356,402.72
  5. Step 5: Solve for x
    x = 4,356,402.72/2,138.47
  6. Step 6: Final answer
    x = 2,037.16

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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.