Home / 3,146.38-4,342.05-1,730.12

Finding the Fourth Proportional to 3,146.38, 4,342.05 and 1,730.12

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Solution

The fourth proportional to 3,146.38, 4,342.05 and 1,730.12 is: 2,387.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,146.38 : 4,342.05 = 1,730.12 : x
  2. Step 2: Convert to fraction form
    3,146.38/4,342.05 = 1,730.12/x
  3. Step 3: Cross multiply
    3,146.38x = 4,342.05 × 1,730.12
  4. Step 4: Simplify right side
    3,146.38x = 7,512,267.55
  5. Step 5: Solve for x
    x = 7,512,267.55/3,146.38
  6. Step 6: Final answer
    x = 2,387.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.