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Finding the Fourth Proportional to 8,877.16, 12,256.32 and 6,856.90

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Solution

The fourth proportional to 8,877.16, 12,256.32 and 6,856.90 is: 9,467.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,877.16 : 12,256.32 = 6,856.90 : x
  2. Step 2: Convert to fraction form
    8,877.16/12,256.32 = 6,856.90/x
  3. Step 3: Cross multiply
    8,877.16x = 12,256.32 × 6,856.90
  4. Step 4: Simplify right side
    8,877.16x = 84,040,360.61
  5. Step 5: Solve for x
    x = 84,040,360.61/8,877.16
  6. Step 6: Final answer
    x = 9,467.03

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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.