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Finding the Fourth Proportional to 8,809.92, 12,155.76 and 5,977.80

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Solution

The fourth proportional to 8,809.92, 12,155.76 and 5,977.80 is: 8,248.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,809.92 : 12,155.76 = 5,977.80 : x
  2. Step 2: Convert to fraction form
    8,809.92/12,155.76 = 5,977.80/x
  3. Step 3: Cross multiply
    8,809.92x = 12,155.76 × 5,977.80
  4. Step 4: Simplify right side
    8,809.92x = 72,664,702.13
  5. Step 5: Solve for x
    x = 72,664,702.13/8,809.92
  6. Step 6: Final answer
    x = 8,248.05

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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.