Home / 1,921.07-2,881.46-1,096.76

Finding the Fourth Proportional to 1,921.07, 2,881.46 and 1,096.76

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Solution

The fourth proportional to 1,921.07, 2,881.46 and 1,096.76 is: 1,645.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.07 : 2,881.46 = 1,096.76 : x
  2. Step 2: Convert to fraction form
    1,921.07/2,881.46 = 1,096.76/x
  3. Step 3: Cross multiply
    1,921.07x = 2,881.46 × 1,096.76
  4. Step 4: Simplify right side
    1,921.07x = 3,160,258.40
  5. Step 5: Solve for x
    x = 3,160,258.40/1,921.07
  6. Step 6: Final answer
    x = 1,645.06

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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.