Home / 7,619.81-11,437.88-6,747.71

Finding the Fourth Proportional to 7,619.81, 11,437.88 and 6,747.71

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Solution

The fourth proportional to 7,619.81, 11,437.88 and 6,747.71 is: 10,128.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,619.81 : 11,437.88 = 6,747.71 : x
  2. Step 2: Convert to fraction form
    7,619.81/11,437.88 = 6,747.71/x
  3. Step 3: Cross multiply
    7,619.81x = 11,437.88 × 6,747.71
  4. Step 4: Simplify right side
    7,619.81x = 77,179,406.33
  5. Step 5: Solve for x
    x = 77,179,406.33/7,619.81
  6. Step 6: Final answer
    x = 10,128.79

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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.