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Finding the Fourth Proportional to 8,410.80, 12,610.80 and 3,482.40

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Solution

The fourth proportional to 8,410.80, 12,610.80 and 3,482.40 is: 5,221.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,410.80 : 12,610.80 = 3,482.40 : x
  2. Step 2: Convert to fraction form
    8,410.80/12,610.80 = 3,482.40/x
  3. Step 3: Cross multiply
    8,410.80x = 12,610.80 × 3,482.40
  4. Step 4: Simplify right side
    8,410.80x = 43,915,849.92
  5. Step 5: Solve for x
    x = 43,915,849.92/8,410.80
  6. Step 6: Final answer
    x = 5,221.36

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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.