Home / 2,787.15-3,846.59-1,608.20

Finding the Fourth Proportional to 2,787.15, 3,846.59 and 1,608.20

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Solution

The fourth proportional to 2,787.15, 3,846.59 and 1,608.20 is: 2,219.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.15 : 3,846.59 = 1,608.20 : x
  2. Step 2: Convert to fraction form
    2,787.15/3,846.59 = 1,608.20/x
  3. Step 3: Cross multiply
    2,787.15x = 3,846.59 × 1,608.20
  4. Step 4: Simplify right side
    2,787.15x = 6,186,058.76
  5. Step 5: Solve for x
    x = 6,186,058.76/2,787.15
  6. Step 6: Final answer
    x = 2,219.49

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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.