Home / 4,911.52-6,778.20-2,815.96

Finding the Fourth Proportional to 4,911.52, 6,778.20 and 2,815.96

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Solution

The fourth proportional to 4,911.52, 6,778.20 and 2,815.96 is: 3,886.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,911.52 : 6,778.20 = 2,815.96 : x
  2. Step 2: Convert to fraction form
    4,911.52/6,778.20 = 2,815.96/x
  3. Step 3: Cross multiply
    4,911.52x = 6,778.20 × 2,815.96
  4. Step 4: Simplify right side
    4,911.52x = 19,087,140.07
  5. Step 5: Solve for x
    x = 19,087,140.07/4,911.52
  6. Step 6: Final answer
    x = 3,886.20

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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.