Home / 2,787.63-4,178.20-1,142.18

Finding the Fourth Proportional to 2,787.63, 4,178.20 and 1,142.18

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Solution

The fourth proportional to 2,787.63, 4,178.20 and 1,142.18 is: 1,711.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.63 : 4,178.20 = 1,142.18 : x
  2. Step 2: Convert to fraction form
    2,787.63/4,178.20 = 1,142.18/x
  3. Step 3: Cross multiply
    2,787.63x = 4,178.20 × 1,142.18
  4. Step 4: Simplify right side
    2,787.63x = 4,772,256.48
  5. Step 5: Solve for x
    x = 4,772,256.48/2,787.63
  6. Step 6: Final answer
    x = 1,711.94

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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.