Home / 3,981.13-5,959.35-3,390.64

Finding the Fourth Proportional to 3,981.13, 5,959.35 and 3,390.64

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Solution

The fourth proportional to 3,981.13, 5,959.35 and 3,390.64 is: 5,075.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.13 : 5,959.35 = 3,390.64 : x
  2. Step 2: Convert to fraction form
    3,981.13/5,959.35 = 3,390.64/x
  3. Step 3: Cross multiply
    3,981.13x = 5,959.35 × 3,390.64
  4. Step 4: Simplify right side
    3,981.13x = 20,206,010.48
  5. Step 5: Solve for x
    x = 20,206,010.48/3,981.13
  6. Step 6: Final answer
    x = 5,075.45

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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.