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Finding the Fourth Proportional to 5,611.78, 8,417.71 and 2,490.95

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Solution

The fourth proportional to 5,611.78, 8,417.71 and 2,490.95 is: 3,736.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,611.78 : 8,417.71 = 2,490.95 : x
  2. Step 2: Convert to fraction form
    5,611.78/8,417.71 = 2,490.95/x
  3. Step 3: Cross multiply
    5,611.78x = 8,417.71 × 2,490.95
  4. Step 4: Simplify right side
    5,611.78x = 20,968,090.38
  5. Step 5: Solve for x
    x = 20,968,090.38/5,611.78
  6. Step 6: Final answer
    x = 3,736.44

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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.