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Finding the Fourth Proportional to 8,607.68, 12,907.26 and 3,060.20

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Solution

The fourth proportional to 8,607.68, 12,907.26 and 3,060.20 is: 4,588.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,607.68 : 12,907.26 = 3,060.20 : x
  2. Step 2: Convert to fraction form
    8,607.68/12,907.26 = 3,060.20/x
  3. Step 3: Cross multiply
    8,607.68x = 12,907.26 × 3,060.20
  4. Step 4: Simplify right side
    8,607.68x = 39,498,732.52
  5. Step 5: Solve for x
    x = 39,498,732.52/8,607.68
  6. Step 6: Final answer
    x = 4,588.78

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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.