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Finding the Fourth Proportional to 5,271.28, 7,907.38 and 1,375.68

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Solution

The fourth proportional to 5,271.28, 7,907.38 and 1,375.68 is: 2,063.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,271.28 : 7,907.38 = 1,375.68 : x
  2. Step 2: Convert to fraction form
    5,271.28/7,907.38 = 1,375.68/x
  3. Step 3: Cross multiply
    5,271.28x = 7,907.38 × 1,375.68
  4. Step 4: Simplify right side
    5,271.28x = 10,878,024.52
  5. Step 5: Solve for x
    x = 10,878,024.52/5,271.28
  6. Step 6: Final answer
    x = 2,063.64

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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.