Home / 1,869.41-2,799.05-1,320.23

Finding the Fourth Proportional to 1,869.41, 2,799.05 and 1,320.23

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Solution

The fourth proportional to 1,869.41, 2,799.05 and 1,320.23 is: 1,976.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,869.41 : 2,799.05 = 1,320.23 : x
  2. Step 2: Convert to fraction form
    1,869.41/2,799.05 = 1,320.23/x
  3. Step 3: Cross multiply
    1,869.41x = 2,799.05 × 1,320.23
  4. Step 4: Simplify right side
    1,869.41x = 3,695,369.19
  5. Step 5: Solve for x
    x = 3,695,369.19/1,869.41
  6. Step 6: Final answer
    x = 1,976.76

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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.