Home / 3,399.84-5,101.85-1,320.07

Finding the Fourth Proportional to 3,399.84, 5,101.85 and 1,320.07

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Solution

The fourth proportional to 3,399.84, 5,101.85 and 1,320.07 is: 1,980.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,399.84 : 5,101.85 = 1,320.07 : x
  2. Step 2: Convert to fraction form
    3,399.84/5,101.85 = 1,320.07/x
  3. Step 3: Cross multiply
    3,399.84x = 5,101.85 × 1,320.07
  4. Step 4: Simplify right side
    3,399.84x = 6,734,799.13
  5. Step 5: Solve for x
    x = 6,734,799.13/3,399.84
  6. Step 6: Final answer
    x = 1,980.92

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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.