Home / 3,147.12-4,342.98-1,749.76

Finding the Fourth Proportional to 3,147.12, 4,342.98 and 1,749.76

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Solution

The fourth proportional to 3,147.12, 4,342.98 and 1,749.76 is: 2,414.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.12 : 4,342.98 = 1,749.76 : x
  2. Step 2: Convert to fraction form
    3,147.12/4,342.98 = 1,749.76/x
  3. Step 3: Cross multiply
    3,147.12x = 4,342.98 × 1,749.76
  4. Step 4: Simplify right side
    3,147.12x = 7,599,172.68
  5. Step 5: Solve for x
    x = 7,599,172.68/3,147.12
  6. Step 6: Final answer
    x = 2,414.64

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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.