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Finding the Fourth Proportional to 8,871.39, 13,307.94 and 4,486.05

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Solution

The fourth proportional to 8,871.39, 13,307.94 and 4,486.05 is: 6,729.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,871.39 : 13,307.94 = 4,486.05 : x
  2. Step 2: Convert to fraction form
    8,871.39/13,307.94 = 4,486.05/x
  3. Step 3: Cross multiply
    8,871.39x = 13,307.94 × 4,486.05
  4. Step 4: Simplify right side
    8,871.39x = 59,700,084.24
  5. Step 5: Solve for x
    x = 59,700,084.24/8,871.39
  6. Step 6: Final answer
    x = 6,729.51

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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.