Home / 2,697.12-3,727.28-2,191.99

Finding the Fourth Proportional to 2,697.12, 3,727.28 and 2,191.99

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Solution

The fourth proportional to 2,697.12, 3,727.28 and 2,191.99 is: 3,029.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,697.12 : 3,727.28 = 2,191.99 : x
  2. Step 2: Convert to fraction form
    2,697.12/3,727.28 = 2,191.99/x
  3. Step 3: Cross multiply
    2,697.12x = 3,727.28 × 2,191.99
  4. Step 4: Simplify right side
    2,697.12x = 8,170,143.91
  5. Step 5: Solve for x
    x = 8,170,143.91/2,697.12
  6. Step 6: Final answer
    x = 3,029.21

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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.