Home / 7,778.17-11,662.55-3,098.90

Finding the Fourth Proportional to 7,778.17, 11,662.55 and 3,098.90

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Solution

The fourth proportional to 7,778.17, 11,662.55 and 3,098.90 is: 4,646.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,778.17 : 11,662.55 = 3,098.90 : x
  2. Step 2: Convert to fraction form
    7,778.17/11,662.55 = 3,098.90/x
  3. Step 3: Cross multiply
    7,778.17x = 11,662.55 × 3,098.90
  4. Step 4: Simplify right side
    7,778.17x = 36,141,025.63
  5. Step 5: Solve for x
    x = 36,141,025.63/7,778.17
  6. Step 6: Final answer
    x = 4,646.47

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1.5x scale

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.