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Finding the Fourth Proportional to 8,641.01, 11,911.86 and 6,115.29

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Solution

The fourth proportional to 8,641.01, 11,911.86 and 6,115.29 is: 8,430.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,641.01 : 11,911.86 = 6,115.29 : x
  2. Step 2: Convert to fraction form
    8,641.01/11,911.86 = 6,115.29/x
  3. Step 3: Cross multiply
    8,641.01x = 11,911.86 × 6,115.29
  4. Step 4: Simplify right side
    8,641.01x = 72,844,478.34
  5. Step 5: Solve for x
    x = 72,844,478.34/8,641.01
  6. Step 6: Final answer
    x = 8,430.09

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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.