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Finding the Fourth Proportional to 6,988.68, 9,651.72 and 5,310.12

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Solution

The fourth proportional to 6,988.68, 9,651.72 and 5,310.12 is: 7,333.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,988.68 : 9,651.72 = 5,310.12 : x
  2. Step 2: Convert to fraction form
    6,988.68/9,651.72 = 5,310.12/x
  3. Step 3: Cross multiply
    6,988.68x = 9,651.72 × 5,310.12
  4. Step 4: Simplify right side
    6,988.68x = 51,251,791.41
  5. Step 5: Solve for x
    x = 51,251,791.41/6,988.68
  6. Step 6: Final answer
    x = 7,333.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.