Home / 7,778.70-11,664.63-2,847.06

Finding the Fourth Proportional to 7,778.70, 11,664.63 and 2,847.06

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Solution

The fourth proportional to 7,778.70, 11,664.63 and 2,847.06 is: 4,269.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,778.70 : 11,664.63 = 2,847.06 : x
  2. Step 2: Convert to fraction form
    7,778.70/11,664.63 = 2,847.06/x
  3. Step 3: Cross multiply
    7,778.70x = 11,664.63 × 2,847.06
  4. Step 4: Simplify right side
    7,778.70x = 33,209,901.49
  5. Step 5: Solve for x
    x = 33,209,901.49/7,778.70
  6. Step 6: Final answer
    x = 4,269.34

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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.