Home / 7,778.39-11,664.54-2,711.30

Finding the Fourth Proportional to 7,778.39, 11,664.54 and 2,711.30

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Solution

The fourth proportional to 7,778.39, 11,664.54 and 2,711.30 is: 4,065.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,778.39 : 11,664.54 = 2,711.30 : x
  2. Step 2: Convert to fraction form
    7,778.39/11,664.54 = 2,711.30/x
  3. Step 3: Cross multiply
    7,778.39x = 11,664.54 × 2,711.30
  4. Step 4: Simplify right side
    7,778.39x = 31,626,008.98
  5. Step 5: Solve for x
    x = 31,626,008.98/7,778.39
  6. Step 6: Final answer
    x = 4,065.88

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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.