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Finding the Fourth Proportional to 7,906.16, 10,913.99 and 4,720.56

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Solution

The fourth proportional to 7,906.16, 10,913.99 and 4,720.56 is: 6,516.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,906.16 : 10,913.99 = 4,720.56 : x
  2. Step 2: Convert to fraction form
    7,906.16/10,913.99 = 4,720.56/x
  3. Step 3: Cross multiply
    7,906.16x = 10,913.99 × 4,720.56
  4. Step 4: Simplify right side
    7,906.16x = 51,520,121.03
  5. Step 5: Solve for x
    x = 51,520,121.03/7,906.16
  6. Step 6: Final answer
    x = 6,516.46

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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.