Home / 5,190.87-7,781.99-2,068.95

Finding the Fourth Proportional to 5,190.87, 7,781.99 and 2,068.95

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Solution

The fourth proportional to 5,190.87, 7,781.99 and 2,068.95 is: 3,101.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,190.87 : 7,781.99 = 2,068.95 : x
  2. Step 2: Convert to fraction form
    5,190.87/7,781.99 = 2,068.95/x
  3. Step 3: Cross multiply
    5,190.87x = 7,781.99 × 2,068.95
  4. Step 4: Simplify right side
    5,190.87x = 16,100,537.87
  5. Step 5: Solve for x
    x = 16,100,537.87/5,190.87
  6. Step 6: Final answer
    x = 3,101.70

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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.