Home / 3,969.51-5,481.18-2,479.92

Finding the Fourth Proportional to 3,969.51, 5,481.18 and 2,479.92

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Solution

The fourth proportional to 3,969.51, 5,481.18 and 2,479.92 is: 3,424.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,969.51 : 5,481.18 = 2,479.92 : x
  2. Step 2: Convert to fraction form
    3,969.51/5,481.18 = 2,479.92/x
  3. Step 3: Cross multiply
    3,969.51x = 5,481.18 × 2,479.92
  4. Step 4: Simplify right side
    3,969.51x = 13,592,887.91
  5. Step 5: Solve for x
    x = 13,592,887.91/3,969.51
  6. Step 6: Final answer
    x = 3,424.32

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1.5x scale

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.