Home / 4,690.80-7,031.88-2,226.78

Finding the Fourth Proportional to 4,690.80, 7,031.88 and 2,226.78

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Solution

The fourth proportional to 4,690.80, 7,031.88 and 2,226.78 is: 3,338.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,690.80 : 7,031.88 = 2,226.78 : x
  2. Step 2: Convert to fraction form
    4,690.80/7,031.88 = 2,226.78/x
  3. Step 3: Cross multiply
    4,690.80x = 7,031.88 × 2,226.78
  4. Step 4: Simplify right side
    4,690.80x = 15,658,449.75
  5. Step 5: Solve for x
    x = 15,658,449.75/4,690.80
  6. Step 6: Final answer
    x = 3,338.12

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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.