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Finding the Fourth Proportional to 6,622.12, 9,885.79 and 6,391.26

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Solution

The fourth proportional to 6,622.12, 9,885.79 and 6,391.26 is: 9,541.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,622.12 : 9,885.79 = 6,391.26 : x
  2. Step 2: Convert to fraction form
    6,622.12/9,885.79 = 6,391.26/x
  3. Step 3: Cross multiply
    6,622.12x = 9,885.79 × 6,391.26
  4. Step 4: Simplify right side
    6,622.12x = 63,182,654.20
  5. Step 5: Solve for x
    x = 63,182,654.20/6,622.12
  6. Step 6: Final answer
    x = 9,541.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.