Home / 2,489.72-3,435.68-1,355.34

Finding the Fourth Proportional to 2,489.72, 3,435.68 and 1,355.34

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Solution

The fourth proportional to 2,489.72, 3,435.68 and 1,355.34 is: 1,870.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,489.72 : 3,435.68 = 1,355.34 : x
  2. Step 2: Convert to fraction form
    2,489.72/3,435.68 = 1,355.34/x
  3. Step 3: Cross multiply
    2,489.72x = 3,435.68 × 1,355.34
  4. Step 4: Simplify right side
    2,489.72x = 4,656,530.80
  5. Step 5: Solve for x
    x = 4,656,530.80/2,489.72
  6. Step 6: Final answer
    x = 1,870.31

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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.