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Finding the Fourth Proportional to 5,019.11, 6,926.31 and 2,780.98

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Solution

The fourth proportional to 5,019.11, 6,926.31 and 2,780.98 is: 3,837.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,019.11 : 6,926.31 = 2,780.98 : x
  2. Step 2: Convert to fraction form
    5,019.11/6,926.31 = 2,780.98/x
  3. Step 3: Cross multiply
    5,019.11x = 6,926.31 × 2,780.98
  4. Step 4: Simplify right side
    5,019.11x = 19,261,951.23
  5. Step 5: Solve for x
    x = 19,261,951.23/5,019.11
  6. Step 6: Final answer
    x = 3,837.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.