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Finding the Fourth Proportional to 6,658.23, 9,971.78 and 5,262.20

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Solution

The fourth proportional to 6,658.23, 9,971.78 and 5,262.20 is: 7,880.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,658.23 : 9,971.78 = 5,262.20 : x
  2. Step 2: Convert to fraction form
    6,658.23/9,971.78 = 5,262.20/x
  3. Step 3: Cross multiply
    6,658.23x = 9,971.78 × 5,262.20
  4. Step 4: Simplify right side
    6,658.23x = 52,473,464.01
  5. Step 5: Solve for x
    x = 52,473,464.01/6,658.23
  6. Step 6: Final answer
    x = 7,880.99

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1.5x scale

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.