Home / 2,211.69-3,315.85-1,432.47

Finding the Fourth Proportional to 2,211.69, 3,315.85 and 1,432.47

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Solution

The fourth proportional to 2,211.69, 3,315.85 and 1,432.47 is: 2,147.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,211.69 : 3,315.85 = 1,432.47 : x
  2. Step 2: Convert to fraction form
    2,211.69/3,315.85 = 1,432.47/x
  3. Step 3: Cross multiply
    2,211.69x = 3,315.85 × 1,432.47
  4. Step 4: Simplify right side
    2,211.69x = 4,749,852.07
  5. Step 5: Solve for x
    x = 4,749,852.07/2,211.69
  6. Step 6: Final answer
    x = 2,147.61

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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.