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Finding the Fourth Proportional to 8,893.13, 12,278.22 and 5,707.79

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Solution

The fourth proportional to 8,893.13, 12,278.22 and 5,707.79 is: 7,880.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,893.13 : 12,278.22 = 5,707.79 : x
  2. Step 2: Convert to fraction form
    8,893.13/12,278.22 = 5,707.79/x
  3. Step 3: Cross multiply
    8,893.13x = 12,278.22 × 5,707.79
  4. Step 4: Simplify right side
    8,893.13x = 70,081,439.94
  5. Step 5: Solve for x
    x = 70,081,439.94/8,893.13
  6. Step 6: Final answer
    x = 7,880.41

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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.