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Finding the Fourth Proportional to 8,860.94, 12,217.95 and 6,619.04

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Solution

The fourth proportional to 8,860.94, 12,217.95 and 6,619.04 is: 9,126.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,860.94 : 12,217.95 = 6,619.04 : x
  2. Step 2: Convert to fraction form
    8,860.94/12,217.95 = 6,619.04/x
  3. Step 3: Cross multiply
    8,860.94x = 12,217.95 × 6,619.04
  4. Step 4: Simplify right side
    8,860.94x = 80,871,038.68
  5. Step 5: Solve for x
    x = 80,871,038.68/8,860.94
  6. Step 6: Final answer
    x = 9,126.69

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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.