Home / 6,812.22-9,402.80-3,980.24

Finding the Fourth Proportional to 6,812.22, 9,402.80 and 3,980.24

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Solution

The fourth proportional to 6,812.22, 9,402.80 and 3,980.24 is: 5,493.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,812.22 : 9,402.80 = 3,980.24 : x
  2. Step 2: Convert to fraction form
    6,812.22/9,402.80 = 3,980.24/x
  3. Step 3: Cross multiply
    6,812.22x = 9,402.80 × 3,980.24
  4. Step 4: Simplify right side
    6,812.22x = 37,425,400.67
  5. Step 5: Solve for x
    x = 37,425,400.67/6,812.22
  6. Step 6: Final answer
    x = 5,493.86

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Half scale
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Double scale
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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.