Home / 3,219.32-4,442.10-1,821.80

Finding the Fourth Proportional to 3,219.32, 4,442.10 and 1,821.80

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Solution

The fourth proportional to 3,219.32, 4,442.10 and 1,821.80 is: 2,513.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,219.32 : 4,442.10 = 1,821.80 : x
  2. Step 2: Convert to fraction form
    3,219.32/4,442.10 = 1,821.80/x
  3. Step 3: Cross multiply
    3,219.32x = 4,442.10 × 1,821.80
  4. Step 4: Simplify right side
    3,219.32x = 8,092,617.78
  5. Step 5: Solve for x
    x = 8,092,617.78/3,219.32
  6. Step 6: Final answer
    x = 2,513.77

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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.