Home / 8,715.88-12,027.42-5,176.84

Finding the Fourth Proportional to 8,715.88, 12,027.42 and 5,176.84

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Solution

The fourth proportional to 8,715.88, 12,027.42 and 5,176.84 is: 7,143.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,715.88 : 12,027.42 = 5,176.84 : x
  2. Step 2: Convert to fraction form
    8,715.88/12,027.42 = 5,176.84/x
  3. Step 3: Cross multiply
    8,715.88x = 12,027.42 × 5,176.84
  4. Step 4: Simplify right side
    8,715.88x = 62,264,028.95
  5. Step 5: Solve for x
    x = 62,264,028.95/8,715.88
  6. Step 6: Final answer
    x = 7,143.75

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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.