Home / 6,619.20-9,134.40-3,965.76

Finding the Fourth Proportional to 6,619.20, 9,134.40 and 3,965.76

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Solution

The fourth proportional to 6,619.20, 9,134.40 and 3,965.76 is: 5,472.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,619.20 : 9,134.40 = 3,965.76 : x
  2. Step 2: Convert to fraction form
    6,619.20/9,134.40 = 3,965.76/x
  3. Step 3: Cross multiply
    6,619.20x = 9,134.40 × 3,965.76
  4. Step 4: Simplify right side
    6,619.20x = 36,224,838.14
  5. Step 5: Solve for x
    x = 36,224,838.14/6,619.20
  6. Step 6: Final answer
    x = 5,472.69

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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.