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Finding the Fourth Proportional to 8,858.96, 12,237.80 and 8,392.40

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Solution

The fourth proportional to 8,858.96, 12,237.80 and 8,392.40 is: 11,593.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,858.96 : 12,237.80 = 8,392.40 : x
  2. Step 2: Convert to fraction form
    8,858.96/12,237.80 = 8,392.40/x
  3. Step 3: Cross multiply
    8,858.96x = 12,237.80 × 8,392.40
  4. Step 4: Simplify right side
    8,858.96x = 102,704,512.72
  5. Step 5: Solve for x
    x = 102,704,512.72/8,858.96
  6. Step 6: Final answer
    x = 11,593.29

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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.