Home / 5,456.92-8,182.98-1,991.76

Finding the Fourth Proportional to 5,456.92, 8,182.98 and 1,991.76

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Solution

The fourth proportional to 5,456.92, 8,182.98 and 1,991.76 is: 2,986.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,456.92 : 8,182.98 = 1,991.76 : x
  2. Step 2: Convert to fraction form
    5,456.92/8,182.98 = 1,991.76/x
  3. Step 3: Cross multiply
    5,456.92x = 8,182.98 × 1,991.76
  4. Step 4: Simplify right side
    5,456.92x = 16,298,532.24
  5. Step 5: Solve for x
    x = 16,298,532.24/5,456.92
  6. Step 6: Final answer
    x = 2,986.76

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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.