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Finding the Fourth Proportional to 5,272.88, 7,896.36 and 3,328.88

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Solution

The fourth proportional to 5,272.88, 7,896.36 and 3,328.88 is: 4,985.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,272.88 : 7,896.36 = 3,328.88 : x
  2. Step 2: Convert to fraction form
    5,272.88/7,896.36 = 3,328.88/x
  3. Step 3: Cross multiply
    5,272.88x = 7,896.36 × 3,328.88
  4. Step 4: Simplify right side
    5,272.88x = 26,286,034.88
  5. Step 5: Solve for x
    x = 26,286,034.88/5,272.88
  6. Step 6: Final answer
    x = 4,985.14

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1.5x scale

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.