Home / 5,157.36-7,123.68-3,481.92

Finding the Fourth Proportional to 5,157.36, 7,123.68 and 3,481.92

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Solution

The fourth proportional to 5,157.36, 7,123.68 and 3,481.92 is: 4,809.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,157.36 : 7,123.68 = 3,481.92 : x
  2. Step 2: Convert to fraction form
    5,157.36/7,123.68 = 3,481.92/x
  3. Step 3: Cross multiply
    5,157.36x = 7,123.68 × 3,481.92
  4. Step 4: Simplify right side
    5,157.36x = 24,804,083.87
  5. Step 5: Solve for x
    x = 24,804,083.87/5,157.36
  6. Step 6: Final answer
    x = 4,809.45

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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.