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Finding the Fourth Proportional to 5,505.56, 7,590.18 and 3,930.92

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Solution

The fourth proportional to 5,505.56, 7,590.18 and 3,930.92 is: 5,419.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,505.56 : 7,590.18 = 3,930.92 : x
  2. Step 2: Convert to fraction form
    5,505.56/7,590.18 = 3,930.92/x
  3. Step 3: Cross multiply
    5,505.56x = 7,590.18 × 3,930.92
  4. Step 4: Simplify right side
    5,505.56x = 29,836,390.37
  5. Step 5: Solve for x
    x = 29,836,390.37/5,505.56
  6. Step 6: Final answer
    x = 5,419.32

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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.