Home / 7,520.39-10,378.01-4,163.13

Finding the Fourth Proportional to 7,520.39, 10,378.01 and 4,163.13

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Solution

The fourth proportional to 7,520.39, 10,378.01 and 4,163.13 is: 5,745.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,520.39 : 10,378.01 = 4,163.13 : x
  2. Step 2: Convert to fraction form
    7,520.39/10,378.01 = 4,163.13/x
  3. Step 3: Cross multiply
    7,520.39x = 10,378.01 × 4,163.13
  4. Step 4: Simplify right side
    7,520.39x = 43,205,015.18
  5. Step 5: Solve for x
    x = 43,205,015.18/7,520.39
  6. Step 6: Final answer
    x = 5,745.05

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Half scale
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Double scale
Find fourth proportional to 7,521.39, 10,379.39 and 4,164.13
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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.