Home / 3,151.80-4,727.70-2,799.45

Finding the Fourth Proportional to 3,151.80, 4,727.70 and 2,799.45

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Solution

The fourth proportional to 3,151.80, 4,727.70 and 2,799.45 is: 4,199.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,151.80 : 4,727.70 = 2,799.45 : x
  2. Step 2: Convert to fraction form
    3,151.80/4,727.70 = 2,799.45/x
  3. Step 3: Cross multiply
    3,151.80x = 4,727.70 × 2,799.45
  4. Step 4: Simplify right side
    3,151.80x = 13,234,959.77
  5. Step 5: Solve for x
    x = 13,234,959.77/3,151.80
  6. Step 6: Final answer
    x = 4,199.18

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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.