Home / 2,331.40-3,496.70-869.80

Finding the Fourth Proportional to 2,331.40, 3,496.70 and 869.80

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Solution

The fourth proportional to 2,331.40, 3,496.70 and 869.80 is: 1,304.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,331.40 : 3,496.70 = 869.80 : x
  2. Step 2: Convert to fraction form
    2,331.40/3,496.70 = 869.80/x
  3. Step 3: Cross multiply
    2,331.40x = 3,496.70 × 869.80
  4. Step 4: Simplify right side
    2,331.40x = 3,041,429.66
  5. Step 5: Solve for x
    x = 3,041,429.66/2,331.40
  6. Step 6: Final answer
    x = 1,304.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.