Home / 4,969.36-7,449.72-2,781.28

Finding the Fourth Proportional to 4,969.36, 7,449.72 and 2,781.28

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Solution

The fourth proportional to 4,969.36, 7,449.72 and 2,781.28 is: 4,169.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,969.36 : 7,449.72 = 2,781.28 : x
  2. Step 2: Convert to fraction form
    4,969.36/7,449.72 = 2,781.28/x
  3. Step 3: Cross multiply
    4,969.36x = 7,449.72 × 2,781.28
  4. Step 4: Simplify right side
    4,969.36x = 20,719,757.24
  5. Step 5: Solve for x
    x = 20,719,757.24/4,969.36
  6. Step 6: Final answer
    x = 4,169.50

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1.5x scale

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.