Home / 2,221.69-3,330.65-1,356.61

Finding the Fourth Proportional to 2,221.69, 3,330.65 and 1,356.61

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Solution

The fourth proportional to 2,221.69, 3,330.65 and 1,356.61 is: 2,033.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.69 : 3,330.65 = 1,356.61 : x
  2. Step 2: Convert to fraction form
    2,221.69/3,330.65 = 1,356.61/x
  3. Step 3: Cross multiply
    2,221.69x = 3,330.65 × 1,356.61
  4. Step 4: Simplify right side
    2,221.69x = 4,518,386.31
  5. Step 5: Solve for x
    x = 4,518,386.31/2,221.69
  6. Step 6: Final answer
    x = 2,033.76

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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.