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Finding the Fourth Proportional to 3,568.80, 5,352.24 and 1,260

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Solution

The fourth proportional to 3,568.80, 5,352.24 and 1,260 is: 1,889.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,568.80 : 5,352.24 = 1,260 : x
  2. Step 2: Convert to fraction form
    3,568.80/5,352.24 = 1,260/x
  3. Step 3: Cross multiply
    3,568.80x = 5,352.24 × 1,260
  4. Step 4: Simplify right side
    3,568.80x = 6,743,822.40
  5. Step 5: Solve for x
    x = 6,743,822.40/3,568.80
  6. Step 6: Final answer
    x = 1,889.66

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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.