Home / 1,913.15-2,640.08-1,073.90

Finding the Fourth Proportional to 1,913.15, 2,640.08 and 1,073.90

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Solution

The fourth proportional to 1,913.15, 2,640.08 and 1,073.90 is: 1,481.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913.15 : 2,640.08 = 1,073.90 : x
  2. Step 2: Convert to fraction form
    1,913.15/2,640.08 = 1,073.90/x
  3. Step 3: Cross multiply
    1,913.15x = 2,640.08 × 1,073.90
  4. Step 4: Simplify right side
    1,913.15x = 2,835,176.54
  5. Step 5: Solve for x
    x = 2,835,176.54/1,913.15
  6. Step 6: Final answer
    x = 1,481.94

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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.