Home / 5,809.38-8,715.78-2,111.55

Finding the Fourth Proportional to 5,809.38, 8,715.78 and 2,111.55

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Solution

The fourth proportional to 5,809.38, 8,715.78 and 2,111.55 is: 3,167.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,809.38 : 8,715.78 = 2,111.55 : x
  2. Step 2: Convert to fraction form
    5,809.38/8,715.78 = 2,111.55/x
  3. Step 3: Cross multiply
    5,809.38x = 8,715.78 × 2,111.55
  4. Step 4: Simplify right side
    5,809.38x = 18,403,805.26
  5. Step 5: Solve for x
    x = 18,403,805.26/5,809.38
  6. Step 6: Final answer
    x = 3,167.95

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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.