Home / 5,072.06-6,989.46-3,878.40

Finding the Fourth Proportional to 5,072.06, 6,989.46 and 3,878.40

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Solution

The fourth proportional to 5,072.06, 6,989.46 and 3,878.40 is: 5,344.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,072.06 : 6,989.46 = 3,878.40 : x
  2. Step 2: Convert to fraction form
    5,072.06/6,989.46 = 3,878.40/x
  3. Step 3: Cross multiply
    5,072.06x = 6,989.46 × 3,878.40
  4. Step 4: Simplify right side
    5,072.06x = 27,107,921.66
  5. Step 5: Solve for x
    x = 27,107,921.66/5,072.06
  6. Step 6: Final answer
    x = 5,344.56

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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.