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Finding the Fourth Proportional to 8,656.84, 11,945.59 and 5,072.19

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Solution

The fourth proportional to 8,656.84, 11,945.59 and 5,072.19 is: 6,999.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,656.84 : 11,945.59 = 5,072.19 : x
  2. Step 2: Convert to fraction form
    8,656.84/11,945.59 = 5,072.19/x
  3. Step 3: Cross multiply
    8,656.84x = 11,945.59 × 5,072.19
  4. Step 4: Simplify right side
    8,656.84x = 60,590,302.14
  5. Step 5: Solve for x
    x = 60,590,302.14/8,656.84
  6. Step 6: Final answer
    x = 6,999.12

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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.