Home / 2,225.18-3,338.30-665.31

Finding the Fourth Proportional to 2,225.18, 3,338.30 and 665.31

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Solution

The fourth proportional to 2,225.18, 3,338.30 and 665.31 is: 998.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,225.18 : 3,338.30 = 665.31 : x
  2. Step 2: Convert to fraction form
    2,225.18/3,338.30 = 665.31/x
  3. Step 3: Cross multiply
    2,225.18x = 3,338.30 × 665.31
  4. Step 4: Simplify right side
    2,225.18x = 2,221,001.05
  5. Step 5: Solve for x
    x = 2,221,001.05/2,225.18
  6. Step 6: Final answer
    x = 998.12

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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.