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Finding the Fourth Proportional to 8,886.40, 13,310.40 and 7,350.40

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Solution

The fourth proportional to 8,886.40, 13,310.40 and 7,350.40 is: 11,009.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,886.40 : 13,310.40 = 7,350.40 : x
  2. Step 2: Convert to fraction form
    8,886.40/13,310.40 = 7,350.40/x
  3. Step 3: Cross multiply
    8,886.40x = 13,310.40 × 7,350.40
  4. Step 4: Simplify right side
    8,886.40x = 97,836,764.16
  5. Step 5: Solve for x
    x = 97,836,764.16/8,886.40
  6. Step 6: Final answer
    x = 11,009.72

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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.