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Finding the Fourth Proportional to 2,548.65, 3,518.13 and 2,478.44

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Solution

The fourth proportional to 2,548.65, 3,518.13 and 2,478.44 is: 3,421.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,548.65 : 3,518.13 = 2,478.44 : x
  2. Step 2: Convert to fraction form
    2,548.65/3,518.13 = 2,478.44/x
  3. Step 3: Cross multiply
    2,548.65x = 3,518.13 × 2,478.44
  4. Step 4: Simplify right side
    2,548.65x = 8,719,456.53
  5. Step 5: Solve for x
    x = 8,719,456.53/2,548.65
  6. Step 6: Final answer
    x = 3,421.21

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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.