Home / 1,869.66-2,799.05-1,087.28

Finding the Fourth Proportional to 1,869.66, 2,799.05 and 1,087.28

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Solution

The fourth proportional to 1,869.66, 2,799.05 and 1,087.28 is: 1,627.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,869.66 : 2,799.05 = 1,087.28 : x
  2. Step 2: Convert to fraction form
    1,869.66/2,799.05 = 1,087.28/x
  3. Step 3: Cross multiply
    1,869.66x = 2,799.05 × 1,087.28
  4. Step 4: Simplify right side
    1,869.66x = 3,043,337.09
  5. Step 5: Solve for x
    x = 3,043,337.09/1,869.66
  6. Step 6: Final answer
    x = 1,627.75

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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.