Home / 6,787.72-10,178.42-3,977.40

Finding the Fourth Proportional to 6,787.72, 10,178.42 and 3,977.40

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Solution

The fourth proportional to 6,787.72, 10,178.42 and 3,977.40 is: 5,964.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,787.72 : 10,178.42 = 3,977.40 : x
  2. Step 2: Convert to fraction form
    6,787.72/10,178.42 = 3,977.40/x
  3. Step 3: Cross multiply
    6,787.72x = 10,178.42 × 3,977.40
  4. Step 4: Simplify right side
    6,787.72x = 40,483,647.71
  5. Step 5: Solve for x
    x = 40,483,647.71/6,787.72
  6. Step 6: Final answer
    x = 5,964.25

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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.