Home / 9,115.28-13,678.70-5,227.28

Finding the Fourth Proportional to 9,115.28, 13,678.70 and 5,227.28

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Solution

The fourth proportional to 9,115.28, 13,678.70 and 5,227.28 is: 7,844.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,115.28 : 13,678.70 = 5,227.28 : x
  2. Step 2: Convert to fraction form
    9,115.28/13,678.70 = 5,227.28/x
  3. Step 3: Cross multiply
    9,115.28x = 13,678.70 × 5,227.28
  4. Step 4: Simplify right side
    9,115.28x = 71,502,394.94
  5. Step 5: Solve for x
    x = 71,502,394.94/9,115.28
  6. Step 6: Final answer
    x = 7,844.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.