Home / 2,990.88-4,486.86-2,561.04

Finding the Fourth Proportional to 2,990.88, 4,486.86 and 2,561.04

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Solution

The fourth proportional to 2,990.88, 4,486.86 and 2,561.04 is: 3,842.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.88 : 4,486.86 = 2,561.04 : x
  2. Step 2: Convert to fraction form
    2,990.88/4,486.86 = 2,561.04/x
  3. Step 3: Cross multiply
    2,990.88x = 4,486.86 × 2,561.04
  4. Step 4: Simplify right side
    2,990.88x = 11,491,027.93
  5. Step 5: Solve for x
    x = 11,491,027.93/2,990.88
  6. Step 6: Final answer
    x = 3,842.02

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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.