Home / 3,398.86-4,690.44-1,906.84

Finding the Fourth Proportional to 3,398.86, 4,690.44 and 1,906.84

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Solution

The fourth proportional to 3,398.86, 4,690.44 and 1,906.84 is: 2,631.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,398.86 : 4,690.44 = 1,906.84 : x
  2. Step 2: Convert to fraction form
    3,398.86/4,690.44 = 1,906.84/x
  3. Step 3: Cross multiply
    3,398.86x = 4,690.44 × 1,906.84
  4. Step 4: Simplify right side
    3,398.86x = 8,943,918.61
  5. Step 5: Solve for x
    x = 8,943,918.61/3,398.86
  6. Step 6: Final answer
    x = 2,631.45

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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.