Home / 3,147.12-4,339.98-1,966.68

Finding the Fourth Proportional to 3,147.12, 4,339.98 and 1,966.68

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Solution

The fourth proportional to 3,147.12, 4,339.98 and 1,966.68 is: 2,712.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.12 : 4,339.98 = 1,966.68 : x
  2. Step 2: Convert to fraction form
    3,147.12/4,339.98 = 1,966.68/x
  3. Step 3: Cross multiply
    3,147.12x = 4,339.98 × 1,966.68
  4. Step 4: Simplify right side
    3,147.12x = 8,535,351.87
  5. Step 5: Solve for x
    x = 8,535,351.87/3,147.12
  6. Step 6: Final answer
    x = 2,712.12

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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.