Home / 2,108.21-3,162.65-1,012.55

Finding the Fourth Proportional to 2,108.21, 3,162.65 and 1,012.55

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Solution

The fourth proportional to 2,108.21, 3,162.65 and 1,012.55 is: 1,518.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,108.21 : 3,162.65 = 1,012.55 : x
  2. Step 2: Convert to fraction form
    2,108.21/3,162.65 = 1,012.55/x
  3. Step 3: Cross multiply
    2,108.21x = 3,162.65 × 1,012.55
  4. Step 4: Simplify right side
    2,108.21x = 3,202,320.38
  5. Step 5: Solve for x
    x = 3,202,320.38/2,108.21
  6. Step 6: Final answer
    x = 1,518.98

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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.