Home / 2,787.54-4,182.57-1,145.22

Finding the Fourth Proportional to 2,787.54, 4,182.57 and 1,145.22

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Solution

The fourth proportional to 2,787.54, 4,182.57 and 1,145.22 is: 1,718.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.54 : 4,182.57 = 1,145.22 : x
  2. Step 2: Convert to fraction form
    2,787.54/4,182.57 = 1,145.22/x
  3. Step 3: Cross multiply
    2,787.54x = 4,182.57 × 1,145.22
  4. Step 4: Simplify right side
    2,787.54x = 4,789,962.82
  5. Step 5: Solve for x
    x = 4,789,962.82/2,787.54
  6. Step 6: Final answer
    x = 1,718.35

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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.