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Finding the Fourth Proportional to 8,865.56, 13,293.95 and 5,168.72

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Solution

The fourth proportional to 8,865.56, 13,293.95 and 5,168.72 is: 7,750.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,865.56 : 13,293.95 = 5,168.72 : x
  2. Step 2: Convert to fraction form
    8,865.56/13,293.95 = 5,168.72/x
  3. Step 3: Cross multiply
    8,865.56x = 13,293.95 × 5,168.72
  4. Step 4: Simplify right side
    8,865.56x = 68,712,612.93
  5. Step 5: Solve for x
    x = 68,712,612.93/8,865.56
  6. Step 6: Final answer
    x = 7,750.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.