Home / 2,891.04-3,991.20-2,195.52

Finding the Fourth Proportional to 2,891.04, 3,991.20 and 2,195.52

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Solution

The fourth proportional to 2,891.04, 3,991.20 and 2,195.52 is: 3,031.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,891.04 : 3,991.20 = 2,195.52 : x
  2. Step 2: Convert to fraction form
    2,891.04/3,991.20 = 2,195.52/x
  3. Step 3: Cross multiply
    2,891.04x = 3,991.20 × 2,195.52
  4. Step 4: Simplify right side
    2,891.04x = 8,762,759.42
  5. Step 5: Solve for x
    x = 8,762,759.42/2,891.04
  6. Step 6: Final answer
    x = 3,031.01

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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.