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Finding the Fourth Proportional to 6,678.61, 10,068.63 and 6,321.40

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Solution

The fourth proportional to 6,678.61, 10,068.63 and 6,321.40 is: 9,530.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,678.61 : 10,068.63 = 6,321.40 : x
  2. Step 2: Convert to fraction form
    6,678.61/10,068.63 = 6,321.40/x
  3. Step 3: Cross multiply
    6,678.61x = 10,068.63 × 6,321.40
  4. Step 4: Simplify right side
    6,678.61x = 63,647,755.73
  5. Step 5: Solve for x
    x = 63,647,755.73/6,678.61
  6. Step 6: Final answer
    x = 9,530.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.