Home / 7,778.55-11,660.45-3,101.43

Finding the Fourth Proportional to 7,778.55, 11,660.45 and 3,101.43

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Solution

The fourth proportional to 7,778.55, 11,660.45 and 3,101.43 is: 4,649.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,778.55 : 11,660.45 = 3,101.43 : x
  2. Step 2: Convert to fraction form
    7,778.55/11,660.45 = 3,101.43/x
  3. Step 3: Cross multiply
    7,778.55x = 11,660.45 × 3,101.43
  4. Step 4: Simplify right side
    7,778.55x = 36,164,090.84
  5. Step 5: Solve for x
    x = 36,164,090.84/7,778.55
  6. Step 6: Final answer
    x = 4,649.21

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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.