Home / 2,489.18-3,435.22-1,370.21

Finding the Fourth Proportional to 2,489.18, 3,435.22 and 1,370.21

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Solution

The fourth proportional to 2,489.18, 3,435.22 and 1,370.21 is: 1,890.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,489.18 : 3,435.22 = 1,370.21 : x
  2. Step 2: Convert to fraction form
    2,489.18/3,435.22 = 1,370.21/x
  3. Step 3: Cross multiply
    2,489.18x = 3,435.22 × 1,370.21
  4. Step 4: Simplify right side
    2,489.18x = 4,706,965.95
  5. Step 5: Solve for x
    x = 4,706,965.95/2,489.18
  6. Step 6: Final answer
    x = 1,890.97

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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.