Home / 3,913.89-5,872.86-2,988.87

Finding the Fourth Proportional to 3,913.89, 5,872.86 and 2,988.87

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Solution

The fourth proportional to 3,913.89, 5,872.86 and 2,988.87 is: 4,484.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.89 : 5,872.86 = 2,988.87 : x
  2. Step 2: Convert to fraction form
    3,913.89/5,872.86 = 2,988.87/x
  3. Step 3: Cross multiply
    3,913.89x = 5,872.86 × 2,988.87
  4. Step 4: Simplify right side
    3,913.89x = 17,553,215.07
  5. Step 5: Solve for x
    x = 17,553,215.07/3,913.89
  6. Step 6: Final answer
    x = 4,484.85

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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.