Home / 3,147.92-4,718.19-1,298.12

Finding the Fourth Proportional to 3,147.92, 4,718.19 and 1,298.12

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Solution

The fourth proportional to 3,147.92, 4,718.19 and 1,298.12 is: 1,945.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.92 : 4,718.19 = 1,298.12 : x
  2. Step 2: Convert to fraction form
    3,147.92/4,718.19 = 1,298.12/x
  3. Step 3: Cross multiply
    3,147.92x = 4,718.19 × 1,298.12
  4. Step 4: Simplify right side
    3,147.92x = 6,124,776.80
  5. Step 5: Solve for x
    x = 6,124,776.80/3,147.92
  6. Step 6: Final answer
    x = 1,945.66

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1.5x scale

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.