Home / 2,860.30-4,290.45-2,811.70

Finding the Fourth Proportional to 2,860.30, 4,290.45 and 2,811.70

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Solution

The fourth proportional to 2,860.30, 4,290.45 and 2,811.70 is: 4,217.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,860.30 : 4,290.45 = 2,811.70 : x
  2. Step 2: Convert to fraction form
    2,860.30/4,290.45 = 2,811.70/x
  3. Step 3: Cross multiply
    2,860.30x = 4,290.45 × 2,811.70
  4. Step 4: Simplify right side
    2,860.30x = 12,063,458.27
  5. Step 5: Solve for x
    x = 12,063,458.27/2,860.30
  6. Step 6: Final answer
    x = 4,217.55

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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.