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Finding the Fourth Proportional to 7,555.79, 11,282.79 and 6,171.86

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Solution

The fourth proportional to 7,555.79, 11,282.79 and 6,171.86 is: 9,216.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,555.79 : 11,282.79 = 6,171.86 : x
  2. Step 2: Convert to fraction form
    7,555.79/11,282.79 = 6,171.86/x
  3. Step 3: Cross multiply
    7,555.79x = 11,282.79 × 6,171.86
  4. Step 4: Simplify right side
    7,555.79x = 69,635,743.88
  5. Step 5: Solve for x
    x = 69,635,743.88/7,555.79
  6. Step 6: Final answer
    x = 9,216.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.