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Finding the Fourth Proportional to 4,988, 7,482 and 2,066.39

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Solution

The fourth proportional to 4,988, 7,482 and 2,066.39 is: 3,099.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,988 : 7,482 = 2,066.39 : x
  2. Step 2: Convert to fraction form
    4,988/7,482 = 2,066.39/x
  3. Step 3: Cross multiply
    4,988x = 7,482 × 2,066.39
  4. Step 4: Simplify right side
    4,988x = 15,460,729.98
  5. Step 5: Solve for x
    x = 15,460,729.98/4,988
  6. Step 6: Final answer
    x = 3,099.59

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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.