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Finding the Fourth Proportional to 7,120.44, 10,661.16 and 5,891.40

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Solution

The fourth proportional to 7,120.44, 10,661.16 and 5,891.40 is: 8,820.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,120.44 : 10,661.16 = 5,891.40 : x
  2. Step 2: Convert to fraction form
    7,120.44/10,661.16 = 5,891.40/x
  3. Step 3: Cross multiply
    7,120.44x = 10,661.16 × 5,891.40
  4. Step 4: Simplify right side
    7,120.44x = 62,809,158.02
  5. Step 5: Solve for x
    x = 62,809,158.02/7,120.44
  6. Step 6: Final answer
    x = 8,820.97

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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.