Home / 2,781.87-4,170.69-1,685.94

Finding the Fourth Proportional to 2,781.87, 4,170.69 and 1,685.94

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Solution

The fourth proportional to 2,781.87, 4,170.69 and 1,685.94 is: 2,527.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,781.87 : 4,170.69 = 1,685.94 : x
  2. Step 2: Convert to fraction form
    2,781.87/4,170.69 = 1,685.94/x
  3. Step 3: Cross multiply
    2,781.87x = 4,170.69 × 1,685.94
  4. Step 4: Simplify right side
    2,781.87x = 7,031,533.10
  5. Step 5: Solve for x
    x = 7,031,533.10/2,781.87
  6. Step 6: Final answer
    x = 2,527.63

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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.