Home / 5,815.14-8,718.78-2,116.92

Finding the Fourth Proportional to 5,815.14, 8,718.78 and 2,116.92

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Solution

The fourth proportional to 5,815.14, 8,718.78 and 2,116.92 is: 3,173.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,815.14 : 8,718.78 = 2,116.92 : x
  2. Step 2: Convert to fraction form
    5,815.14/8,718.78 = 2,116.92/x
  3. Step 3: Cross multiply
    5,815.14x = 8,718.78 × 2,116.92
  4. Step 4: Simplify right side
    5,815.14x = 18,456,959.76
  5. Step 5: Solve for x
    x = 18,456,959.76/5,815.14
  6. Step 6: Final answer
    x = 3,173.95

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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.