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Finding the Fourth Proportional to 3,538.95, 4,878.13 and 2,791.70

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Solution

The fourth proportional to 3,538.95, 4,878.13 and 2,791.70 is: 3,848.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,538.95 : 4,878.13 = 2,791.70 : x
  2. Step 2: Convert to fraction form
    3,538.95/4,878.13 = 2,791.70/x
  3. Step 3: Cross multiply
    3,538.95x = 4,878.13 × 2,791.70
  4. Step 4: Simplify right side
    3,538.95x = 13,618,275.52
  5. Step 5: Solve for x
    x = 13,618,275.52/3,538.95
  6. Step 6: Final answer
    x = 3,848.11

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