Home / 1,917.99-2,648.52-1,211.10

Finding the Fourth Proportional to 1,917.99, 2,648.52 and 1,211.10

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Solution

The fourth proportional to 1,917.99, 2,648.52 and 1,211.10 is: 1,672.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917.99 : 2,648.52 = 1,211.10 : x
  2. Step 2: Convert to fraction form
    1,917.99/2,648.52 = 1,211.10/x
  3. Step 3: Cross multiply
    1,917.99x = 2,648.52 × 1,211.10
  4. Step 4: Simplify right side
    1,917.99x = 3,207,622.57
  5. Step 5: Solve for x
    x = 3,207,622.57/1,917.99
  6. Step 6: Final answer
    x = 1,672.39

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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.