Home / 2,787.06-4,178.10-1,056.90

Finding the Fourth Proportional to 2,787.06, 4,178.10 and 1,056.90

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Solution

The fourth proportional to 2,787.06, 4,178.10 and 1,056.90 is: 1,584.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.06 : 4,178.10 = 1,056.90 : x
  2. Step 2: Convert to fraction form
    2,787.06/4,178.10 = 1,056.90/x
  3. Step 3: Cross multiply
    2,787.06x = 4,178.10 × 1,056.90
  4. Step 4: Simplify right side
    2,787.06x = 4,415,833.89
  5. Step 5: Solve for x
    x = 4,415,833.89/2,787.06
  6. Step 6: Final answer
    x = 1,584.41

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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.