Home / 3,115.46-4,677.28-2,857.55

Finding the Fourth Proportional to 3,115.46, 4,677.28 and 2,857.55

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Solution

The fourth proportional to 3,115.46, 4,677.28 and 2,857.55 is: 4,290.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.46 : 4,677.28 = 2,857.55 : x
  2. Step 2: Convert to fraction form
    3,115.46/4,677.28 = 2,857.55/x
  3. Step 3: Cross multiply
    3,115.46x = 4,677.28 × 2,857.55
  4. Step 4: Simplify right side
    3,115.46x = 13,365,530.93
  5. Step 5: Solve for x
    x = 13,365,530.93/3,115.46
  6. Step 6: Final answer
    x = 4,290.06

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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.