Home / 7,775.61-11,660.37-3,390.06

Finding the Fourth Proportional to 7,775.61, 11,660.37 and 3,390.06

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Solution

The fourth proportional to 7,775.61, 11,660.37 and 3,390.06 is: 5,083.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,775.61 : 11,660.37 = 3,390.06 : x
  2. Step 2: Convert to fraction form
    7,775.61/11,660.37 = 3,390.06/x
  3. Step 3: Cross multiply
    7,775.61x = 11,660.37 × 3,390.06
  4. Step 4: Simplify right side
    7,775.61x = 39,529,353.92
  5. Step 5: Solve for x
    x = 39,529,353.92/7,775.61
  6. Step 6: Final answer
    x = 5,083.76

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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.