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Finding the Fourth Proportional to 8,465.80, 12,699.92 and 2,622.92

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Solution

The fourth proportional to 8,465.80, 12,699.92 and 2,622.92 is: 3,934.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,465.80 : 12,699.92 = 2,622.92 : x
  2. Step 2: Convert to fraction form
    8,465.80/12,699.92 = 2,622.92/x
  3. Step 3: Cross multiply
    8,465.80x = 12,699.92 × 2,622.92
  4. Step 4: Simplify right side
    8,465.80x = 33,310,874.17
  5. Step 5: Solve for x
    x = 33,310,874.17/8,465.80
  6. Step 6: Final answer
    x = 3,934.76

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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.