Home / 7,935.40-11,890.58-6,447.36

Finding the Fourth Proportional to 7,935.40, 11,890.58 and 6,447.36

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Solution

The fourth proportional to 7,935.40, 11,890.58 and 6,447.36 is: 9,660.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,935.40 : 11,890.58 = 6,447.36 : x
  2. Step 2: Convert to fraction form
    7,935.40/11,890.58 = 6,447.36/x
  3. Step 3: Cross multiply
    7,935.40x = 11,890.58 × 6,447.36
  4. Step 4: Simplify right side
    7,935.40x = 76,662,849.87
  5. Step 5: Solve for x
    x = 76,662,849.87/7,935.40
  6. Step 6: Final answer
    x = 9,660.87

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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.