Home / 7,789.78-11,682.51-2,166.16

Finding the Fourth Proportional to 7,789.78, 11,682.51 and 2,166.16

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Solution

The fourth proportional to 7,789.78, 11,682.51 and 2,166.16 is: 3,248.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,789.78 : 11,682.51 = 2,166.16 : x
  2. Step 2: Convert to fraction form
    7,789.78/11,682.51 = 2,166.16/x
  3. Step 3: Cross multiply
    7,789.78x = 11,682.51 × 2,166.16
  4. Step 4: Simplify right side
    7,789.78x = 25,306,185.86
  5. Step 5: Solve for x
    x = 25,306,185.86/7,789.78
  6. Step 6: Final answer
    x = 3,248.64

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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.