Home / 2,117.44-2,922.64-1,278.16

Finding the Fourth Proportional to 2,117.44, 2,922.64 and 1,278.16

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Solution

The fourth proportional to 2,117.44, 2,922.64 and 1,278.16 is: 1,764.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,117.44 : 2,922.64 = 1,278.16 : x
  2. Step 2: Convert to fraction form
    2,117.44/2,922.64 = 1,278.16/x
  3. Step 3: Cross multiply
    2,117.44x = 2,922.64 × 1,278.16
  4. Step 4: Simplify right side
    2,117.44x = 3,735,601.54
  5. Step 5: Solve for x
    x = 3,735,601.54/2,117.44
  6. Step 6: Final answer
    x = 1,764.21

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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.