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Finding the Fourth Proportional to 6,468.50, 9,702.75 and 1,851.86

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Solution

The fourth proportional to 6,468.50, 9,702.75 and 1,851.86 is: 2,777.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,468.50 : 9,702.75 = 1,851.86 : x
  2. Step 2: Convert to fraction form
    6,468.50/9,702.75 = 1,851.86/x
  3. Step 3: Cross multiply
    6,468.50x = 9,702.75 × 1,851.86
  4. Step 4: Simplify right side
    6,468.50x = 17,968,134.62
  5. Step 5: Solve for x
    x = 17,968,134.62/6,468.50
  6. Step 6: Final answer
    x = 2,777.79

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Double scale
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Similar ratio
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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.