Home / 2,781.20-4,165.12-1,682.84

Finding the Fourth Proportional to 2,781.20, 4,165.12 and 1,682.84

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Solution

The fourth proportional to 2,781.20, 4,165.12 and 1,682.84 is: 2,520.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,781.20 : 4,165.12 = 1,682.84 : x
  2. Step 2: Convert to fraction form
    2,781.20/4,165.12 = 1,682.84/x
  3. Step 3: Cross multiply
    2,781.20x = 4,165.12 × 1,682.84
  4. Step 4: Simplify right side
    2,781.20x = 7,009,243.06
  5. Step 5: Solve for x
    x = 7,009,243.06/2,781.20
  6. Step 6: Final answer
    x = 2,520.22

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1.5x scale

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.