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Finding the Fourth Proportional to 8,340.80, 12,511.24 and 2,184.80

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Solution

The fourth proportional to 8,340.80, 12,511.24 and 2,184.80 is: 3,277.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,340.80 : 12,511.24 = 2,184.80 : x
  2. Step 2: Convert to fraction form
    8,340.80/12,511.24 = 2,184.80/x
  3. Step 3: Cross multiply
    8,340.80x = 12,511.24 × 2,184.80
  4. Step 4: Simplify right side
    8,340.80x = 27,334,557.15
  5. Step 5: Solve for x
    x = 27,334,557.15/8,340.80
  6. Step 6: Final answer
    x = 3,277.21

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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.