Home / 4,781.28-7,168.96-2,148.32

Finding the Fourth Proportional to 4,781.28, 7,168.96 and 2,148.32

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Solution

The fourth proportional to 4,781.28, 7,168.96 and 2,148.32 is: 3,221.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,781.28 : 7,168.96 = 2,148.32 : x
  2. Step 2: Convert to fraction form
    4,781.28/7,168.96 = 2,148.32/x
  3. Step 3: Cross multiply
    4,781.28x = 7,168.96 × 2,148.32
  4. Step 4: Simplify right side
    4,781.28x = 15,401,220.15
  5. Step 5: Solve for x
    x = 15,401,220.15/4,781.28
  6. Step 6: Final answer
    x = 3,221.15

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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.