Home / 5,111.10-7,666.65-3,863.70

Finding the Fourth Proportional to 5,111.10, 7,666.65 and 3,863.70

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Solution

The fourth proportional to 5,111.10, 7,666.65 and 3,863.70 is: 5,795.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,111.10 : 7,666.65 = 3,863.70 : x
  2. Step 2: Convert to fraction form
    5,111.10/7,666.65 = 3,863.70/x
  3. Step 3: Cross multiply
    5,111.10x = 7,666.65 × 3,863.70
  4. Step 4: Simplify right side
    5,111.10x = 29,621,635.61
  5. Step 5: Solve for x
    x = 29,621,635.61/5,111.10
  6. Step 6: Final answer
    x = 5,795.55

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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.