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Finding the Fourth Proportional to 3,549.95, 5,324.90 and 917.23

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Solution

The fourth proportional to 3,549.95, 5,324.90 and 917.23 is: 1,375.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,549.95 : 5,324.90 = 917.23 : x
  2. Step 2: Convert to fraction form
    3,549.95/5,324.90 = 917.23/x
  3. Step 3: Cross multiply
    3,549.95x = 5,324.90 × 917.23
  4. Step 4: Simplify right side
    3,549.95x = 4,884,163.54
  5. Step 5: Solve for x
    x = 4,884,163.54/3,549.95
  6. Step 6: Final answer
    x = 1,375.84

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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.