Home / 5,509.72-8,266.38-2,221.12

Finding the Fourth Proportional to 5,509.72, 8,266.38 and 2,221.12

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Solution

The fourth proportional to 5,509.72, 8,266.38 and 2,221.12 is: 3,332.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,509.72 : 8,266.38 = 2,221.12 : x
  2. Step 2: Convert to fraction form
    5,509.72/8,266.38 = 2,221.12/x
  3. Step 3: Cross multiply
    5,509.72x = 8,266.38 × 2,221.12
  4. Step 4: Simplify right side
    5,509.72x = 18,360,621.95
  5. Step 5: Solve for x
    x = 18,360,621.95/5,509.72
  6. Step 6: Final answer
    x = 3,332.41

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Double scale
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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.