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Finding the Fourth Proportional to 1,917.65, 2,648.02 and 1,819.24

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Solution

The fourth proportional to 1,917.65, 2,648.02 and 1,819.24 is: 2,512.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917.65 : 2,648.02 = 1,819.24 : x
  2. Step 2: Convert to fraction form
    1,917.65/2,648.02 = 1,819.24/x
  3. Step 3: Cross multiply
    1,917.65x = 2,648.02 × 1,819.24
  4. Step 4: Simplify right side
    1,917.65x = 4,817,366.12
  5. Step 5: Solve for x
    x = 4,817,366.12/1,917.65
  6. Step 6: Final answer
    x = 2,512.12

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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.