Home / 3,807.69-5,251.20-2,391.51

Finding the Fourth Proportional to 3,807.69, 5,251.20 and 2,391.51

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Solution

The fourth proportional to 3,807.69, 5,251.20 and 2,391.51 is: 3,298.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,807.69 : 5,251.20 = 2,391.51 : x
  2. Step 2: Convert to fraction form
    3,807.69/5,251.20 = 2,391.51/x
  3. Step 3: Cross multiply
    3,807.69x = 5,251.20 × 2,391.51
  4. Step 4: Simplify right side
    3,807.69x = 12,558,278.50
  5. Step 5: Solve for x
    x = 12,558,278.50/3,807.69
  6. Step 6: Final answer
    x = 3,298.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.