Home / 1,913.01-2,640.09-1,073.80

Finding the Fourth Proportional to 1,913.01, 2,640.09 and 1,073.80

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Solution

The fourth proportional to 1,913.01, 2,640.09 and 1,073.80 is: 1,481.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913.01 : 2,640.09 = 1,073.80 : x
  2. Step 2: Convert to fraction form
    1,913.01/2,640.09 = 1,073.80/x
  3. Step 3: Cross multiply
    1,913.01x = 2,640.09 × 1,073.80
  4. Step 4: Simplify right side
    1,913.01x = 2,834,915.44
  5. Step 5: Solve for x
    x = 2,834,915.44/1,913.01
  6. Step 6: Final answer
    x = 1,481.91

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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.