Home / 2,221.46-3,330.39-923.90

Finding the Fourth Proportional to 2,221.46, 3,330.39 and 923.90

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Solution

The fourth proportional to 2,221.46, 3,330.39 and 923.90 is: 1,385.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.46 : 3,330.39 = 923.90 : x
  2. Step 2: Convert to fraction form
    2,221.46/3,330.39 = 923.90/x
  3. Step 3: Cross multiply
    2,221.46x = 3,330.39 × 923.90
  4. Step 4: Simplify right side
    2,221.46x = 3,076,947.32
  5. Step 5: Solve for x
    x = 3,076,947.32/2,221.46
  6. Step 6: Final answer
    x = 1,385.10

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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.