Home / 3,398.21-4,688.42-1,981.58

Finding the Fourth Proportional to 3,398.21, 4,688.42 and 1,981.58

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Solution

The fourth proportional to 3,398.21, 4,688.42 and 1,981.58 is: 2,733.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,398.21 : 4,688.42 = 1,981.58 : x
  2. Step 2: Convert to fraction form
    3,398.21/4,688.42 = 1,981.58/x
  3. Step 3: Cross multiply
    3,398.21x = 4,688.42 × 1,981.58
  4. Step 4: Simplify right side
    3,398.21x = 9,290,445.95
  5. Step 5: Solve for x
    x = 9,290,445.95/3,398.21
  6. Step 6: Final answer
    x = 2,733.93

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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.