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Finding the Fourth Proportional to 5,555.77, 7,667.79 and 3,197.45

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Solution

The fourth proportional to 5,555.77, 7,667.79 and 3,197.45 is: 4,412.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,555.77 : 7,667.79 = 3,197.45 : x
  2. Step 2: Convert to fraction form
    5,555.77/7,667.79 = 3,197.45/x
  3. Step 3: Cross multiply
    5,555.77x = 7,667.79 × 3,197.45
  4. Step 4: Simplify right side
    5,555.77x = 24,517,375.14
  5. Step 5: Solve for x
    x = 24,517,375.14/5,555.77
  6. Step 6: Final answer
    x = 4,412.96

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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.