Home / 6,620.40-9,134.64-4,102.56

Finding the Fourth Proportional to 6,620.40, 9,134.64 and 4,102.56

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Solution

The fourth proportional to 6,620.40, 9,134.64 and 4,102.56 is: 5,660.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,620.40 : 9,134.64 = 4,102.56 : x
  2. Step 2: Convert to fraction form
    6,620.40/9,134.64 = 4,102.56/x
  3. Step 3: Cross multiply
    6,620.40x = 9,134.64 × 4,102.56
  4. Step 4: Simplify right side
    6,620.40x = 37,475,408.68
  5. Step 5: Solve for x
    x = 37,475,408.68/6,620.40
  6. Step 6: Final answer
    x = 5,660.60

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1.5x scale

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.