Home / 2,211.24-3,051.45-1,216.53

Finding the Fourth Proportional to 2,211.24, 3,051.45 and 1,216.53

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Solution

The fourth proportional to 2,211.24, 3,051.45 and 1,216.53 is: 1,678.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,211.24 : 3,051.45 = 1,216.53 : x
  2. Step 2: Convert to fraction form
    2,211.24/3,051.45 = 1,216.53/x
  3. Step 3: Cross multiply
    2,211.24x = 3,051.45 × 1,216.53
  4. Step 4: Simplify right side
    2,211.24x = 3,712,180.47
  5. Step 5: Solve for x
    x = 3,712,180.47/2,211.24
  6. Step 6: Final answer
    x = 1,678.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.