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Finding the Fourth Proportional to 7,561.91, 11,342.95 and 2,631.71

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Solution

The fourth proportional to 7,561.91, 11,342.95 and 2,631.71 is: 3,947.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,561.91 : 11,342.95 = 2,631.71 : x
  2. Step 2: Convert to fraction form
    7,561.91/11,342.95 = 2,631.71/x
  3. Step 3: Cross multiply
    7,561.91x = 11,342.95 × 2,631.71
  4. Step 4: Simplify right side
    7,561.91x = 29,851,376.72
  5. Step 5: Solve for x
    x = 29,851,376.72/7,561.91
  6. Step 6: Final answer
    x = 3,947.60

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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.