Home / 1,199.28-1,789.74-1,043.76

Finding the Fourth Proportional to 1,199.28, 1,789.74 and 1,043.76

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Solution

The fourth proportional to 1,199.28, 1,789.74 and 1,043.76 is: 1,557.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,199.28 : 1,789.74 = 1,043.76 : x
  2. Step 2: Convert to fraction form
    1,199.28/1,789.74 = 1,043.76/x
  3. Step 3: Cross multiply
    1,199.28x = 1,789.74 × 1,043.76
  4. Step 4: Simplify right side
    1,199.28x = 1,868,059.02
  5. Step 5: Solve for x
    x = 1,868,059.02/1,199.28
  6. Step 6: Final answer
    x = 1,557.65

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.