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Finding the Fourth Proportional to 8,544.35, 12,817.54 and 8,077.79

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Solution

The fourth proportional to 8,544.35, 12,817.54 and 8,077.79 is: 12,117.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,544.35 : 12,817.54 = 8,077.79 : x
  2. Step 2: Convert to fraction form
    8,544.35/12,817.54 = 8,077.79/x
  3. Step 3: Cross multiply
    8,544.35x = 12,817.54 × 8,077.79
  4. Step 4: Simplify right side
    8,544.35x = 103,537,438.58
  5. Step 5: Solve for x
    x = 103,537,438.58/8,544.35
  6. Step 6: Final answer
    x = 12,117.65

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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.