Home / 7,945.76-10,955.80-6,448.96

Finding the Fourth Proportional to 7,945.76, 10,955.80 and 6,448.96

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Solution

The fourth proportional to 7,945.76, 10,955.80 and 6,448.96 is: 8,891.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,945.76 : 10,955.80 = 6,448.96 : x
  2. Step 2: Convert to fraction form
    7,945.76/10,955.80 = 6,448.96/x
  3. Step 3: Cross multiply
    7,945.76x = 10,955.80 × 6,448.96
  4. Step 4: Simplify right side
    7,945.76x = 70,653,515.97
  5. Step 5: Solve for x
    x = 70,653,515.97/7,945.76
  6. Step 6: Final answer
    x = 8,891.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.