Home / 8,250.39-11,378.61-5,415.59

Finding the Fourth Proportional to 8,250.39, 11,378.61 and 5,415.59

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Solution

The fourth proportional to 8,250.39, 11,378.61 and 5,415.59 is: 7,468.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,250.39 : 11,378.61 = 5,415.59 : x
  2. Step 2: Convert to fraction form
    8,250.39/11,378.61 = 5,415.59/x
  3. Step 3: Cross multiply
    8,250.39x = 11,378.61 × 5,415.59
  4. Step 4: Simplify right side
    8,250.39x = 61,621,914.98
  5. Step 5: Solve for x
    x = 61,621,914.98/8,250.39
  6. Step 6: Final answer
    x = 7,468.97

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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.