Home / 2,406.96-3,321.68-1,398.58

Finding the Fourth Proportional to 2,406.96, 3,321.68 and 1,398.58

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Solution

The fourth proportional to 2,406.96, 3,321.68 and 1,398.58 is: 1,930.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,406.96 : 3,321.68 = 1,398.58 : x
  2. Step 2: Convert to fraction form
    2,406.96/3,321.68 = 1,398.58/x
  3. Step 3: Cross multiply
    2,406.96x = 3,321.68 × 1,398.58
  4. Step 4: Simplify right side
    2,406.96x = 4,645,635.21
  5. Step 5: Solve for x
    x = 4,645,635.21/2,406.96
  6. Step 6: Final answer
    x = 1,930.08

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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.