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Finding the Fourth Proportional to 8,988.21, 13,482.78 and 2,749.17

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Solution

The fourth proportional to 8,988.21, 13,482.78 and 2,749.17 is: 4,123.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,988.21 : 13,482.78 = 2,749.17 : x
  2. Step 2: Convert to fraction form
    8,988.21/13,482.78 = 2,749.17/x
  3. Step 3: Cross multiply
    8,988.21x = 13,482.78 × 2,749.17
  4. Step 4: Simplify right side
    8,988.21x = 37,066,454.29
  5. Step 5: Solve for x
    x = 37,066,454.29/8,988.21
  6. Step 6: Final answer
    x = 4,123.90

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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.