Home / 7,789.82-11,686.33-2,859.50

Finding the Fourth Proportional to 7,789.82, 11,686.33 and 2,859.50

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Solution

The fourth proportional to 7,789.82, 11,686.33 and 2,859.50 is: 4,289.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,789.82 : 11,686.33 = 2,859.50 : x
  2. Step 2: Convert to fraction form
    7,789.82/11,686.33 = 2,859.50/x
  3. Step 3: Cross multiply
    7,789.82x = 11,686.33 × 2,859.50
  4. Step 4: Simplify right side
    7,789.82x = 33,417,077.34
  5. Step 5: Solve for x
    x = 33,417,077.34/7,789.82
  6. Step 6: Final answer
    x = 4,289.84

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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.