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Finding the Fourth Proportional to 8,605.53, 12,900.08 and 2,758.14

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Solution

The fourth proportional to 8,605.53, 12,900.08 and 2,758.14 is: 4,134.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,605.53 : 12,900.08 = 2,758.14 : x
  2. Step 2: Convert to fraction form
    8,605.53/12,900.08 = 2,758.14/x
  3. Step 3: Cross multiply
    8,605.53x = 12,900.08 × 2,758.14
  4. Step 4: Simplify right side
    8,605.53x = 35,580,212.86
  5. Step 5: Solve for x
    x = 35,580,212.86/8,605.53
  6. Step 6: Final answer
    x = 4,134.58

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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.