Home / 1,913.19-2,640-1,073.91

Finding the Fourth Proportional to 1,913.19, 2,640 and 1,073.91

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Solution

The fourth proportional to 1,913.19, 2,640 and 1,073.91 is: 1,481.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913.19 : 2,640 = 1,073.91 : x
  2. Step 2: Convert to fraction form
    1,913.19/2,640 = 1,073.91/x
  3. Step 3: Cross multiply
    1,913.19x = 2,640 × 1,073.91
  4. Step 4: Simplify right side
    1,913.19x = 2,835,122.40
  5. Step 5: Solve for x
    x = 2,835,122.40/1,913.19
  6. Step 6: Final answer
    x = 1,481.88

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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.