Home / 2,591.19-3,909.87-2,489.94

Finding the Fourth Proportional to 2,591.19, 3,909.87 and 2,489.94

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Solution

The fourth proportional to 2,591.19, 3,909.87 and 2,489.94 is: 3,757.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,591.19 : 3,909.87 = 2,489.94 : x
  2. Step 2: Convert to fraction form
    2,591.19/3,909.87 = 2,489.94/x
  3. Step 3: Cross multiply
    2,591.19x = 3,909.87 × 2,489.94
  4. Step 4: Simplify right side
    2,591.19x = 9,735,341.71
  5. Step 5: Solve for x
    x = 9,735,341.71/2,591.19
  6. Step 6: Final answer
    x = 3,757.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.