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Finding the Fourth Proportional to 6,891.45, 9,510.26 and 3,747.64

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Solution

The fourth proportional to 6,891.45, 9,510.26 and 3,747.64 is: 5,171.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,891.45 : 9,510.26 = 3,747.64 : x
  2. Step 2: Convert to fraction form
    6,891.45/9,510.26 = 3,747.64/x
  3. Step 3: Cross multiply
    6,891.45x = 9,510.26 × 3,747.64
  4. Step 4: Simplify right side
    6,891.45x = 35,641,030.79
  5. Step 5: Solve for x
    x = 35,641,030.79/6,891.45
  6. Step 6: Final answer
    x = 5,171.78

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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.