Home / 7,619.62-10,515.83-4,789.13

Finding the Fourth Proportional to 7,619.62, 10,515.83 and 4,789.13

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Solution

The fourth proportional to 7,619.62, 10,515.83 and 4,789.13 is: 6,609.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,619.62 : 10,515.83 = 4,789.13 : x
  2. Step 2: Convert to fraction form
    7,619.62/10,515.83 = 4,789.13/x
  3. Step 3: Cross multiply
    7,619.62x = 10,515.83 × 4,789.13
  4. Step 4: Simplify right side
    7,619.62x = 50,361,600.40
  5. Step 5: Solve for x
    x = 50,361,600.40/7,619.62
  6. Step 6: Final answer
    x = 6,609.46

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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.