Home / 5,116.94-7,061.41-2,878.80

Finding the Fourth Proportional to 5,116.94, 7,061.41 and 2,878.80

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Solution

The fourth proportional to 5,116.94, 7,061.41 and 2,878.80 is: 3,972.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,116.94 : 7,061.41 = 2,878.80 : x
  2. Step 2: Convert to fraction form
    5,116.94/7,061.41 = 2,878.80/x
  3. Step 3: Cross multiply
    5,116.94x = 7,061.41 × 2,878.80
  4. Step 4: Simplify right side
    5,116.94x = 20,328,387.11
  5. Step 5: Solve for x
    x = 20,328,387.11/5,116.94
  6. Step 6: Final answer
    x = 3,972.76

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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.