Home / 3,219.50-4,442.87-1,803.20

Finding the Fourth Proportional to 3,219.50, 4,442.87 and 1,803.20

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Solution

The fourth proportional to 3,219.50, 4,442.87 and 1,803.20 is: 2,488.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,219.50 : 4,442.87 = 1,803.20 : x
  2. Step 2: Convert to fraction form
    3,219.50/4,442.87 = 1,803.20/x
  3. Step 3: Cross multiply
    3,219.50x = 4,442.87 × 1,803.20
  4. Step 4: Simplify right side
    3,219.50x = 8,011,355.33
  5. Step 5: Solve for x
    x = 8,011,355.33/3,219.50
  6. Step 6: Final answer
    x = 2,488.39

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Double scale
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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.