Home / 4,878.14-6,728.94-2,990.57

Finding the Fourth Proportional to 4,878.14, 6,728.94 and 2,990.57

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Solution

The fourth proportional to 4,878.14, 6,728.94 and 2,990.57 is: 4,125.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,878.14 : 6,728.94 = 2,990.57 : x
  2. Step 2: Convert to fraction form
    4,878.14/6,728.94 = 2,990.57/x
  3. Step 3: Cross multiply
    4,878.14x = 6,728.94 × 2,990.57
  4. Step 4: Simplify right side
    4,878.14x = 20,123,366.10
  5. Step 5: Solve for x
    x = 20,123,366.10/4,878.14
  6. Step 6: Final answer
    x = 4,125.21

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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.