Home / 2,117.43-2,922.60-1,278.18

Finding the Fourth Proportional to 2,117.43, 2,922.60 and 1,278.18

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Solution

The fourth proportional to 2,117.43, 2,922.60 and 1,278.18 is: 1,764.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,117.43 : 2,922.60 = 1,278.18 : x
  2. Step 2: Convert to fraction form
    2,117.43/2,922.60 = 1,278.18/x
  3. Step 3: Cross multiply
    2,117.43x = 2,922.60 × 1,278.18
  4. Step 4: Simplify right side
    2,117.43x = 3,735,608.87
  5. Step 5: Solve for x
    x = 3,735,608.87/2,117.43
  6. Step 6: Final answer
    x = 1,764.22

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1.5x scale

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.