Home / 3,101,982.87-4,278,989.12-1,861,272.50

Finding the Fourth Proportional to 3,101,982.87, 4,278,989.12 and 1,861,272.50

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Solution

The fourth proportional to 3,101,982.87, 4,278,989.12 and 1,861,272.50 is: 2,567,507.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,101,982.87 : 4,278,989.12 = 1,861,272.50 : x
  2. Step 2: Convert to fraction form
    3,101,982.87/4,278,989.12 = 1,861,272.50/x
  3. Step 3: Cross multiply
    3,101,982.87x = 4,278,989.12 × 1,861,272.50
  4. Step 4: Simplify right side
    3,101,982.87x = 7,964,364,778,246.31
  5. Step 5: Solve for x
    x = 7,964,364,778,246.31/3,101,982.87
  6. Step 6: Final answer
    x = 2,567,507.66

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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.