Home / 3,398.50-4,697.78-2,835.70

Finding the Fourth Proportional to 3,398.50, 4,697.78 and 2,835.70

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Solution

The fourth proportional to 3,398.50, 4,697.78 and 2,835.70 is: 3,919.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,398.50 : 4,697.78 = 2,835.70 : x
  2. Step 2: Convert to fraction form
    3,398.50/4,697.78 = 2,835.70/x
  3. Step 3: Cross multiply
    3,398.50x = 4,697.78 × 2,835.70
  4. Step 4: Simplify right side
    3,398.50x = 13,321,494.75
  5. Step 5: Solve for x
    x = 13,321,494.75/3,398.50
  6. Step 6: Final answer
    x = 3,919.82

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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.