Home / 2,489.36-3,434.81-1,426.92

Finding the Fourth Proportional to 2,489.36, 3,434.81 and 1,426.92

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Solution

The fourth proportional to 2,489.36, 3,434.81 and 1,426.92 is: 1,968.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,489.36 : 3,434.81 = 1,426.92 : x
  2. Step 2: Convert to fraction form
    2,489.36/3,434.81 = 1,426.92/x
  3. Step 3: Cross multiply
    2,489.36x = 3,434.81 × 1,426.92
  4. Step 4: Simplify right side
    2,489.36x = 4,901,191.95
  5. Step 5: Solve for x
    x = 4,901,191.95/2,489.36
  6. Step 6: Final answer
    x = 1,968.86

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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.