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Finding the Fourth Proportional to 4,549.40, 6,822.18 and 1,918.09

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Solution

The fourth proportional to 4,549.40, 6,822.18 and 1,918.09 is: 2,876.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,549.40 : 6,822.18 = 1,918.09 : x
  2. Step 2: Convert to fraction form
    4,549.40/6,822.18 = 1,918.09/x
  3. Step 3: Cross multiply
    4,549.40x = 6,822.18 × 1,918.09
  4. Step 4: Simplify right side
    4,549.40x = 13,085,525.39
  5. Step 5: Solve for x
    x = 13,085,525.39/4,549.40
  6. Step 6: Final answer
    x = 2,876.32

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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.