Home / 3,905-5,853.98-1,439.24

Finding the Fourth Proportional to 3,905, 5,853.98 and 1,439.24

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Solution

The fourth proportional to 3,905, 5,853.98 and 1,439.24 is: 2,157.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,905 : 5,853.98 = 1,439.24 : x
  2. Step 2: Convert to fraction form
    3,905/5,853.98 = 1,439.24/x
  3. Step 3: Cross multiply
    3,905x = 5,853.98 × 1,439.24
  4. Step 4: Simplify right side
    3,905x = 8,425,282.18
  5. Step 5: Solve for x
    x = 8,425,282.18/3,905
  6. Step 6: Final answer
    x = 2,157.56

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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.