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Finding the Fourth Proportional to 6,468.37, 9,700.78 and 1,787.26

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Solution

The fourth proportional to 6,468.37, 9,700.78 and 1,787.26 is: 2,680.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,468.37 : 9,700.78 = 1,787.26 : x
  2. Step 2: Convert to fraction form
    6,468.37/9,700.78 = 1,787.26/x
  3. Step 3: Cross multiply
    6,468.37x = 9,700.78 × 1,787.26
  4. Step 4: Simplify right side
    6,468.37x = 17,337,816.06
  5. Step 5: Solve for x
    x = 17,337,816.06/6,468.37
  6. Step 6: Final answer
    x = 2,680.40

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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.