Home / 2,229.96-3,345.40-669.90

Finding the Fourth Proportional to 2,229.96, 3,345.40 and 669.90

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Solution

The fourth proportional to 2,229.96, 3,345.40 and 669.90 is: 1,004.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,229.96 : 3,345.40 = 669.90 : x
  2. Step 2: Convert to fraction form
    2,229.96/3,345.40 = 669.90/x
  3. Step 3: Cross multiply
    2,229.96x = 3,345.40 × 669.90
  4. Step 4: Simplify right side
    2,229.96x = 2,241,083.46
  5. Step 5: Solve for x
    x = 2,241,083.46/2,229.96
  6. Step 6: Final answer
    x = 1,004.99

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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.