Home / 3,147.70-4,343.65-1,731.12

Finding the Fourth Proportional to 3,147.70, 4,343.65 and 1,731.12

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Solution

The fourth proportional to 3,147.70, 4,343.65 and 1,731.12 is: 2,388.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.70 : 4,343.65 = 1,731.12 : x
  2. Step 2: Convert to fraction form
    3,147.70/4,343.65 = 1,731.12/x
  3. Step 3: Cross multiply
    3,147.70x = 4,343.65 × 1,731.12
  4. Step 4: Simplify right side
    3,147.70x = 7,519,379.39
  5. Step 5: Solve for x
    x = 7,519,379.39/3,147.70
  6. Step 6: Final answer
    x = 2,388.85

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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.