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Finding the Fourth Proportional to 8,562.14, 11,815.39 and 5,377.09

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Solution

The fourth proportional to 8,562.14, 11,815.39 and 5,377.09 is: 7,420.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,562.14 : 11,815.39 = 5,377.09 : x
  2. Step 2: Convert to fraction form
    8,562.14/11,815.39 = 5,377.09/x
  3. Step 3: Cross multiply
    8,562.14x = 11,815.39 × 5,377.09
  4. Step 4: Simplify right side
    8,562.14x = 63,532,415.42
  5. Step 5: Solve for x
    x = 63,532,415.42/8,562.14
  6. Step 6: Final answer
    x = 7,420.16

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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.