Home / 2,787.09-4,180.65-938.35

Finding the Fourth Proportional to 2,787.09, 4,180.65 and 938.35

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Solution

The fourth proportional to 2,787.09, 4,180.65 and 938.35 is: 1,407.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.09 : 4,180.65 = 938.35 : x
  2. Step 2: Convert to fraction form
    2,787.09/4,180.65 = 938.35/x
  3. Step 3: Cross multiply
    2,787.09x = 4,180.65 × 938.35
  4. Step 4: Simplify right side
    2,787.09x = 3,922,912.93
  5. Step 5: Solve for x
    x = 3,922,912.93/2,787.09
  6. Step 6: Final answer
    x = 1,407.53

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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.