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Finding the Fourth Proportional to 8,717.72, 13,076.58 and 2,872.76

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Solution

The fourth proportional to 8,717.72, 13,076.58 and 2,872.76 is: 4,309.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,717.72 : 13,076.58 = 2,872.76 : x
  2. Step 2: Convert to fraction form
    8,717.72/13,076.58 = 2,872.76/x
  3. Step 3: Cross multiply
    8,717.72x = 13,076.58 × 2,872.76
  4. Step 4: Simplify right side
    8,717.72x = 37,565,875.96
  5. Step 5: Solve for x
    x = 37,565,875.96/8,717.72
  6. Step 6: Final answer
    x = 4,309.14

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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.