Home / 8,178.57-12,259.35-3,787.97

Finding the Fourth Proportional to 8,178.57, 12,259.35 and 3,787.97

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Solution

The fourth proportional to 8,178.57, 12,259.35 and 3,787.97 is: 5,678.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,178.57 : 12,259.35 = 3,787.97 : x
  2. Step 2: Convert to fraction form
    8,178.57/12,259.35 = 3,787.97/x
  3. Step 3: Cross multiply
    8,178.57x = 12,259.35 × 3,787.97
  4. Step 4: Simplify right side
    8,178.57x = 46,437,988.72
  5. Step 5: Solve for x
    x = 46,437,988.72/8,178.57
  6. Step 6: Final answer
    x = 5,678.01

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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.