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Finding the Fourth Proportional to 8,606.70, 11,879.79 and 5,071.05

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Solution

The fourth proportional to 8,606.70, 11,879.79 and 5,071.05 is: 6,999.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,606.70 : 11,879.79 = 5,071.05 : x
  2. Step 2: Convert to fraction form
    8,606.70/11,879.79 = 5,071.05/x
  3. Step 3: Cross multiply
    8,606.70x = 11,879.79 × 5,071.05
  4. Step 4: Simplify right side
    8,606.70x = 60,243,009.08
  5. Step 5: Solve for x
    x = 60,243,009.08/8,606.70
  6. Step 6: Final answer
    x = 6,999.55

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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.