Home / 7,865.46-11,789.22-3,911.76

Finding the Fourth Proportional to 7,865.46, 11,789.22 and 3,911.76

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Solution

The fourth proportional to 7,865.46, 11,789.22 and 3,911.76 is: 5,863.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,865.46 : 11,789.22 = 3,911.76 : x
  2. Step 2: Convert to fraction form
    7,865.46/11,789.22 = 3,911.76/x
  3. Step 3: Cross multiply
    7,865.46x = 11,789.22 × 3,911.76
  4. Step 4: Simplify right side
    7,865.46x = 46,116,599.23
  5. Step 5: Solve for x
    x = 46,116,599.23/7,865.46
  6. Step 6: Final answer
    x = 5,863.18

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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.