Home / 2,489.28-3,435.21-1,370.22

Finding the Fourth Proportional to 2,489.28, 3,435.21 and 1,370.22

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Solution

The fourth proportional to 2,489.28, 3,435.21 and 1,370.22 is: 1,890.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,489.28 : 3,435.21 = 1,370.22 : x
  2. Step 2: Convert to fraction form
    2,489.28/3,435.21 = 1,370.22/x
  3. Step 3: Cross multiply
    2,489.28x = 3,435.21 × 1,370.22
  4. Step 4: Simplify right side
    2,489.28x = 4,706,975.43
  5. Step 5: Solve for x
    x = 4,706,975.43/2,489.28
  6. Step 6: Final answer
    x = 1,890.90

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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.