Home / 2,211.35-3,051.61-1,216.60

Finding the Fourth Proportional to 2,211.35, 3,051.61 and 1,216.60

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Solution

The fourth proportional to 2,211.35, 3,051.61 and 1,216.60 is: 1,678.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,211.35 : 3,051.61 = 1,216.60 : x
  2. Step 2: Convert to fraction form
    2,211.35/3,051.61 = 1,216.60/x
  3. Step 3: Cross multiply
    2,211.35x = 3,051.61 × 1,216.60
  4. Step 4: Simplify right side
    2,211.35x = 3,712,582.64
  5. Step 5: Solve for x
    x = 3,712,582.64/2,211.35
  6. Step 6: Final answer
    x = 1,678.88

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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.