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Finding the Fourth Proportional to 5,391.72, 7,436.88 and 4,837.68

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Solution

The fourth proportional to 5,391.72, 7,436.88 and 4,837.68 is: 6,672.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,391.72 : 7,436.88 = 4,837.68 : x
  2. Step 2: Convert to fraction form
    5,391.72/7,436.88 = 4,837.68/x
  3. Step 3: Cross multiply
    5,391.72x = 7,436.88 × 4,837.68
  4. Step 4: Simplify right side
    5,391.72x = 35,977,245.64
  5. Step 5: Solve for x
    x = 35,977,245.64/5,391.72
  6. Step 6: Final answer
    x = 6,672.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.