Home / 3,291.86-4,538.79-2,172.44

Finding the Fourth Proportional to 3,291.86, 4,538.79 and 2,172.44

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Solution

The fourth proportional to 3,291.86, 4,538.79 and 2,172.44 is: 2,995.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,291.86 : 4,538.79 = 2,172.44 : x
  2. Step 2: Convert to fraction form
    3,291.86/4,538.79 = 2,172.44/x
  3. Step 3: Cross multiply
    3,291.86x = 4,538.79 × 2,172.44
  4. Step 4: Simplify right side
    3,291.86x = 9,860,260.29
  5. Step 5: Solve for x
    x = 9,860,260.29/3,291.86
  6. Step 6: Final answer
    x = 2,995.34

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1.5x scale

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.