Home / 1,917.03-2,874.92-618.20

Finding the Fourth Proportional to 1,917.03, 2,874.92 and 618.20

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Solution

The fourth proportional to 1,917.03, 2,874.92 and 618.20 is: 927.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917.03 : 2,874.92 = 618.20 : x
  2. Step 2: Convert to fraction form
    1,917.03/2,874.92 = 618.20/x
  3. Step 3: Cross multiply
    1,917.03x = 2,874.92 × 618.20
  4. Step 4: Simplify right side
    1,917.03x = 1,777,258.08
  5. Step 5: Solve for x
    x = 1,777,258.08/1,917.03
  6. Step 6: Final answer
    x = 927.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.