Home / 5,815.06-8,724.30-2,117.20

Finding the Fourth Proportional to 5,815.06, 8,724.30 and 2,117.20

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Solution

The fourth proportional to 5,815.06, 8,724.30 and 2,117.20 is: 3,176.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,815.06 : 8,724.30 = 2,117.20 : x
  2. Step 2: Convert to fraction form
    5,815.06/8,724.30 = 2,117.20/x
  3. Step 3: Cross multiply
    5,815.06x = 8,724.30 × 2,117.20
  4. Step 4: Simplify right side
    5,815.06x = 18,471,087.96
  5. Step 5: Solve for x
    x = 18,471,087.96/5,815.06
  6. Step 6: Final answer
    x = 3,176.42

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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.