Home / 3,418.68-5,135.70-1,878.84

Finding the Fourth Proportional to 3,418.68, 5,135.70 and 1,878.84

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Solution

The fourth proportional to 3,418.68, 5,135.70 and 1,878.84 is: 2,822.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,418.68 : 5,135.70 = 1,878.84 : x
  2. Step 2: Convert to fraction form
    3,418.68/5,135.70 = 1,878.84/x
  3. Step 3: Cross multiply
    3,418.68x = 5,135.70 × 1,878.84
  4. Step 4: Simplify right side
    3,418.68x = 9,649,158.59
  5. Step 5: Solve for x
    x = 9,649,158.59/3,418.68
  6. Step 6: Final answer
    x = 2,822.48

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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.