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Finding the Fourth Proportional to 8,557.98, 11,764.63 and 7,358.55

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Solution

The fourth proportional to 8,557.98, 11,764.63 and 7,358.55 is: 10,115.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,557.98 : 11,764.63 = 7,358.55 : x
  2. Step 2: Convert to fraction form
    8,557.98/11,764.63 = 7,358.55/x
  3. Step 3: Cross multiply
    8,557.98x = 11,764.63 × 7,358.55
  4. Step 4: Simplify right side
    8,557.98x = 86,570,618.09
  5. Step 5: Solve for x
    x = 86,570,618.09/8,557.98
  6. Step 6: Final answer
    x = 10,115.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.