Home / 2,591.98-3,878.68-2,418.18

Finding the Fourth Proportional to 2,591.98, 3,878.68 and 2,418.18

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Solution

The fourth proportional to 2,591.98, 3,878.68 and 2,418.18 is: 3,618.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,591.98 : 3,878.68 = 2,418.18 : x
  2. Step 2: Convert to fraction form
    2,591.98/3,878.68 = 2,418.18/x
  3. Step 3: Cross multiply
    2,591.98x = 3,878.68 × 2,418.18
  4. Step 4: Simplify right side
    2,591.98x = 9,379,346.40
  5. Step 5: Solve for x
    x = 9,379,346.40/2,591.98
  6. Step 6: Final answer
    x = 3,618.60

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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.