Home / 2,442.12-3,670.86-2,121.48

Finding the Fourth Proportional to 2,442.12, 3,670.86 and 2,121.48

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Solution

The fourth proportional to 2,442.12, 3,670.86 and 2,121.48 is: 3,188.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,442.12 : 3,670.86 = 2,121.48 : x
  2. Step 2: Convert to fraction form
    2,442.12/3,670.86 = 2,121.48/x
  3. Step 3: Cross multiply
    2,442.12x = 3,670.86 × 2,121.48
  4. Step 4: Simplify right side
    2,442.12x = 7,787,656.07
  5. Step 5: Solve for x
    x = 7,787,656.07/2,442.12
  6. Step 6: Final answer
    x = 3,188.89

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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.