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Finding the Fourth Proportional to 5,694.40, 8,546.40 and 2,775.20

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Solution

The fourth proportional to 5,694.40, 8,546.40 and 2,775.20 is: 4,165.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,694.40 : 8,546.40 = 2,775.20 : x
  2. Step 2: Convert to fraction form
    5,694.40/8,546.40 = 2,775.20/x
  3. Step 3: Cross multiply
    5,694.40x = 8,546.40 × 2,775.20
  4. Step 4: Simplify right side
    5,694.40x = 23,717,969.28
  5. Step 5: Solve for x
    x = 23,717,969.28/5,694.40
  6. Step 6: Final answer
    x = 4,165.14

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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.