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Finding the Fourth Proportional to 3,551.99, 5,329.13 and 2,321.80

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Solution

The fourth proportional to 3,551.99, 5,329.13 and 2,321.80 is: 3,483.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,551.99 : 5,329.13 = 2,321.80 : x
  2. Step 2: Convert to fraction form
    3,551.99/5,329.13 = 2,321.80/x
  3. Step 3: Cross multiply
    3,551.99x = 5,329.13 × 2,321.80
  4. Step 4: Simplify right side
    3,551.99x = 12,373,149.10
  5. Step 5: Solve for x
    x = 12,373,149.10/3,551.99
  6. Step 6: Final answer
    x = 3,483.45

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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.