Home / 5,268.28-7,270.39-2,878.48

Finding the Fourth Proportional to 5,268.28, 7,270.39 and 2,878.48

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Solution

The fourth proportional to 5,268.28, 7,270.39 and 2,878.48 is: 3,972.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,268.28 : 7,270.39 = 2,878.48 : x
  2. Step 2: Convert to fraction form
    5,268.28/7,270.39 = 2,878.48/x
  3. Step 3: Cross multiply
    5,268.28x = 7,270.39 × 2,878.48
  4. Step 4: Simplify right side
    5,268.28x = 20,927,661.23
  5. Step 5: Solve for x
    x = 20,927,661.23/5,268.28
  6. Step 6: Final answer
    x = 3,972.39

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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.