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Finding the Fourth Proportional to 8,886.72, 13,335.60 and 8,813.28

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Solution

The fourth proportional to 8,886.72, 13,335.60 and 8,813.28 is: 13,225.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,886.72 : 13,335.60 = 8,813.28 : x
  2. Step 2: Convert to fraction form
    8,886.72/13,335.60 = 8,813.28/x
  3. Step 3: Cross multiply
    8,886.72x = 13,335.60 × 8,813.28
  4. Step 4: Simplify right side
    8,886.72x = 117,530,376.77
  5. Step 5: Solve for x
    x = 117,530,376.77/8,886.72
  6. Step 6: Final answer
    x = 13,225.39

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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.