Home / 3,612.30-5,419.04-1,272.20

Finding the Fourth Proportional to 3,612.30, 5,419.04 and 1,272.20

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Solution

The fourth proportional to 3,612.30, 5,419.04 and 1,272.20 is: 1,908.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612.30 : 5,419.04 = 1,272.20 : x
  2. Step 2: Convert to fraction form
    3,612.30/5,419.04 = 1,272.20/x
  3. Step 3: Cross multiply
    3,612.30x = 5,419.04 × 1,272.20
  4. Step 4: Simplify right side
    3,612.30x = 6,894,102.69
  5. Step 5: Solve for x
    x = 6,894,102.69/3,612.30
  6. Step 6: Final answer
    x = 1,908.51

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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.