Home / 5,147.59-7,102.73-2,878.97

Finding the Fourth Proportional to 5,147.59, 7,102.73 and 2,878.97

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Solution

The fourth proportional to 5,147.59, 7,102.73 and 2,878.97 is: 3,972.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147.59 : 7,102.73 = 2,878.97 : x
  2. Step 2: Convert to fraction form
    5,147.59/7,102.73 = 2,878.97/x
  3. Step 3: Cross multiply
    5,147.59x = 7,102.73 × 2,878.97
  4. Step 4: Simplify right side
    5,147.59x = 20,448,546.59
  5. Step 5: Solve for x
    x = 20,448,546.59/5,147.59
  6. Step 6: Final answer
    x = 3,972.45

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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.