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Finding the Fourth Proportional to 7,471.91, 11,209.23 and 3,086.99

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Solution

The fourth proportional to 7,471.91, 11,209.23 and 3,086.99 is: 4,631.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,471.91 : 11,209.23 = 3,086.99 : x
  2. Step 2: Convert to fraction form
    7,471.91/11,209.23 = 3,086.99/x
  3. Step 3: Cross multiply
    7,471.91x = 11,209.23 × 3,086.99
  4. Step 4: Simplify right side
    7,471.91x = 34,602,780.92
  5. Step 5: Solve for x
    x = 34,602,780.92/7,471.91
  6. Step 6: Final answer
    x = 4,631.05

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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.