Home / 4,815.62-7,211.88-2,618.90

Finding the Fourth Proportional to 4,815.62, 7,211.88 and 2,618.90

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Solution

The fourth proportional to 4,815.62, 7,211.88 and 2,618.90 is: 3,922.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,815.62 : 7,211.88 = 2,618.90 : x
  2. Step 2: Convert to fraction form
    4,815.62/7,211.88 = 2,618.90/x
  3. Step 3: Cross multiply
    4,815.62x = 7,211.88 × 2,618.90
  4. Step 4: Simplify right side
    4,815.62x = 18,887,156.47
  5. Step 5: Solve for x
    x = 18,887,156.47/4,815.62
  6. Step 6: Final answer
    x = 3,922.07

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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.