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Finding the Fourth Proportional to 4,886.47, 7,331.07 and 1,966.82

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Solution

The fourth proportional to 4,886.47, 7,331.07 and 1,966.82 is: 2,950.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,886.47 : 7,331.07 = 1,966.82 : x
  2. Step 2: Convert to fraction form
    4,886.47/7,331.07 = 1,966.82/x
  3. Step 3: Cross multiply
    4,886.47x = 7,331.07 × 1,966.82
  4. Step 4: Simplify right side
    4,886.47x = 14,418,895.10
  5. Step 5: Solve for x
    x = 14,418,895.10/4,886.47
  6. Step 6: Final answer
    x = 2,950.78

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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.