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Finding the Fourth Proportional to 7,019.88, 9,658.38 and 5,331.48

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Solution

The fourth proportional to 7,019.88, 9,658.38 and 5,331.48 is: 7,335.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,019.88 : 9,658.38 = 5,331.48 : x
  2. Step 2: Convert to fraction form
    7,019.88/9,658.38 = 5,331.48/x
  3. Step 3: Cross multiply
    7,019.88x = 9,658.38 × 5,331.48
  4. Step 4: Simplify right side
    7,019.88x = 51,493,459.80
  5. Step 5: Solve for x
    x = 51,493,459.80/7,019.88
  6. Step 6: Final answer
    x = 7,335.38

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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.