Home / 5,872.79-8,107.94-3,885.05

Finding the Fourth Proportional to 5,872.79, 8,107.94 and 3,885.05

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Solution

The fourth proportional to 5,872.79, 8,107.94 and 3,885.05 is: 5,363.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,872.79 : 8,107.94 = 3,885.05 : x
  2. Step 2: Convert to fraction form
    5,872.79/8,107.94 = 3,885.05/x
  3. Step 3: Cross multiply
    5,872.79x = 8,107.94 × 3,885.05
  4. Step 4: Simplify right side
    5,872.79x = 31,499,721.47
  5. Step 5: Solve for x
    x = 31,499,721.47/5,872.79
  6. Step 6: Final answer
    x = 5,363.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.