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Finding the Fourth Proportional to 8,671.72, 11,967.08 and 5,267.76

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Solution

The fourth proportional to 8,671.72, 11,967.08 and 5,267.76 is: 7,269.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,671.72 : 11,967.08 = 5,267.76 : x
  2. Step 2: Convert to fraction form
    8,671.72/11,967.08 = 5,267.76/x
  3. Step 3: Cross multiply
    8,671.72x = 11,967.08 × 5,267.76
  4. Step 4: Simplify right side
    8,671.72x = 63,039,705.34
  5. Step 5: Solve for x
    x = 63,039,705.34/8,671.72
  6. Step 6: Final answer
    x = 7,269.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.