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Finding the Fourth Proportional to 8,515.62, 12,774.78 and 2,670.84

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Solution

The fourth proportional to 8,515.62, 12,774.78 and 2,670.84 is: 4,006.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,515.62 : 12,774.78 = 2,670.84 : x
  2. Step 2: Convert to fraction form
    8,515.62/12,774.78 = 2,670.84/x
  3. Step 3: Cross multiply
    8,515.62x = 12,774.78 × 2,670.84
  4. Step 4: Simplify right side
    8,515.62x = 34,119,393.42
  5. Step 5: Solve for x
    x = 34,119,393.42/8,515.62
  6. Step 6: Final answer
    x = 4,006.68

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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.