Home / 8,918.25-12,306.15-5,141.38

Finding the Fourth Proportional to 8,918.25, 12,306.15 and 5,141.38

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Solution

The fourth proportional to 8,918.25, 12,306.15 and 5,141.38 is: 7,094.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,918.25 : 12,306.15 = 5,141.38 : x
  2. Step 2: Convert to fraction form
    8,918.25/12,306.15 = 5,141.38/x
  3. Step 3: Cross multiply
    8,918.25x = 12,306.15 × 5,141.38
  4. Step 4: Simplify right side
    8,918.25x = 63,270,593.49
  5. Step 5: Solve for x
    x = 63,270,593.49/8,918.25
  6. Step 6: Final answer
    x = 7,094.51

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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.