Home / 2,787.58-4,177.05-1,142.74

Finding the Fourth Proportional to 2,787.58, 4,177.05 and 1,142.74

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Solution

The fourth proportional to 2,787.58, 4,177.05 and 1,142.74 is: 1,712.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.58 : 4,177.05 = 1,142.74 : x
  2. Step 2: Convert to fraction form
    2,787.58/4,177.05 = 1,142.74/x
  3. Step 3: Cross multiply
    2,787.58x = 4,177.05 × 1,142.74
  4. Step 4: Simplify right side
    2,787.58x = 4,773,282.12
  5. Step 5: Solve for x
    x = 4,773,282.12/2,787.58
  6. Step 6: Final answer
    x = 1,712.34

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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.