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Finding the Fourth Proportional to 8,708.54, 12,015.70 and 5,881.14

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Solution

The fourth proportional to 8,708.54, 12,015.70 and 5,881.14 is: 8,114.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,708.54 : 12,015.70 = 5,881.14 : x
  2. Step 2: Convert to fraction form
    8,708.54/12,015.70 = 5,881.14/x
  3. Step 3: Cross multiply
    8,708.54x = 12,015.70 × 5,881.14
  4. Step 4: Simplify right side
    8,708.54x = 70,665,999.20
  5. Step 5: Solve for x
    x = 70,665,999.20/8,708.54
  6. Step 6: Final answer
    x = 8,114.57

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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.