Home / 8,860.86-12,217.84-6,618.95

Finding the Fourth Proportional to 8,860.86, 12,217.84 and 6,618.95

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Solution

The fourth proportional to 8,860.86, 12,217.84 and 6,618.95 is: 9,126.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,860.86 : 12,217.84 = 6,618.95 : x
  2. Step 2: Convert to fraction form
    8,860.86/12,217.84 = 6,618.95/x
  3. Step 3: Cross multiply
    8,860.86x = 12,217.84 × 6,618.95
  4. Step 4: Simplify right side
    8,860.86x = 80,869,240.25
  5. Step 5: Solve for x
    x = 80,869,240.25/8,860.86
  6. Step 6: Final answer
    x = 9,126.57

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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.