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Finding the Fourth Proportional to 8,608.04, 11,879.16 and 5,071.40

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Solution

The fourth proportional to 8,608.04, 11,879.16 and 5,071.40 is: 6,998.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,608.04 : 11,879.16 = 5,071.40 : x
  2. Step 2: Convert to fraction form
    8,608.04/11,879.16 = 5,071.40/x
  3. Step 3: Cross multiply
    8,608.04x = 11,879.16 × 5,071.40
  4. Step 4: Simplify right side
    8,608.04x = 60,243,972.02
  5. Step 5: Solve for x
    x = 60,243,972.02/8,608.04
  6. Step 6: Final answer
    x = 6,998.57

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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.