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Finding the Fourth Proportional to 4,889.64, 7,335.68 and 1,968.18

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Solution

The fourth proportional to 4,889.64, 7,335.68 and 1,968.18 is: 2,952.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,889.64 : 7,335.68 = 1,968.18 : x
  2. Step 2: Convert to fraction form
    4,889.64/7,335.68 = 1,968.18/x
  3. Step 3: Cross multiply
    4,889.64x = 7,335.68 × 1,968.18
  4. Step 4: Simplify right side
    4,889.64x = 14,437,938.66
  5. Step 5: Solve for x
    x = 14,437,938.66/4,889.64
  6. Step 6: Final answer
    x = 2,952.76

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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.