Home / 7,124.75-9,833.37-3,980.33

Finding the Fourth Proportional to 7,124.75, 9,833.37 and 3,980.33

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Solution

The fourth proportional to 7,124.75, 9,833.37 and 3,980.33 is: 5,493.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,124.75 : 9,833.37 = 3,980.33 : x
  2. Step 2: Convert to fraction form
    7,124.75/9,833.37 = 3,980.33/x
  3. Step 3: Cross multiply
    7,124.75x = 9,833.37 × 3,980.33
  4. Step 4: Simplify right side
    7,124.75x = 39,140,057.61
  5. Step 5: Solve for x
    x = 39,140,057.61/7,124.75
  6. Step 6: Final answer
    x = 5,493.53

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Half scale
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Double scale
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Similar ratio
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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.