Home / 6,921.48-9,553.60-3,938.92

Finding the Fourth Proportional to 6,921.48, 9,553.60 and 3,938.92

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Solution

The fourth proportional to 6,921.48, 9,553.60 and 3,938.92 is: 5,436.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,921.48 : 9,553.60 = 3,938.92 : x
  2. Step 2: Convert to fraction form
    6,921.48/9,553.60 = 3,938.92/x
  3. Step 3: Cross multiply
    6,921.48x = 9,553.60 × 3,938.92
  4. Step 4: Simplify right side
    6,921.48x = 37,630,866.11
  5. Step 5: Solve for x
    x = 37,630,866.11/6,921.48
  6. Step 6: Final answer
    x = 5,436.82

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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.