Home / 1,913.10-2,640.18-1,073.76

Finding the Fourth Proportional to 1,913.10, 2,640.18 and 1,073.76

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Solution

The fourth proportional to 1,913.10, 2,640.18 and 1,073.76 is: 1,481.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913.10 : 2,640.18 = 1,073.76 : x
  2. Step 2: Convert to fraction form
    1,913.10/2,640.18 = 1,073.76/x
  3. Step 3: Cross multiply
    1,913.10x = 2,640.18 × 1,073.76
  4. Step 4: Simplify right side
    1,913.10x = 2,834,919.68
  5. Step 5: Solve for x
    x = 2,834,919.68/1,913.10
  6. Step 6: Final answer
    x = 1,481.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.