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Finding the Fourth Proportional to 6,468.78, 9,702.88 and 1,851.78

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Solution

The fourth proportional to 6,468.78, 9,702.88 and 1,851.78 is: 2,777.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,468.78 : 9,702.88 = 1,851.78 : x
  2. Step 2: Convert to fraction form
    6,468.78/9,702.88 = 1,851.78/x
  3. Step 3: Cross multiply
    6,468.78x = 9,702.88 × 1,851.78
  4. Step 4: Simplify right side
    6,468.78x = 17,967,599.13
  5. Step 5: Solve for x
    x = 17,967,599.13/6,468.78
  6. Step 6: Final answer
    x = 2,777.59

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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.