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Finding the Fourth Proportional to 7,471.55, 11,205.09 and 2,540.07

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Solution

The fourth proportional to 7,471.55, 11,205.09 and 2,540.07 is: 3,809.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,471.55 : 11,205.09 = 2,540.07 : x
  2. Step 2: Convert to fraction form
    7,471.55/11,205.09 = 2,540.07/x
  3. Step 3: Cross multiply
    7,471.55x = 11,205.09 × 2,540.07
  4. Step 4: Simplify right side
    7,471.55x = 28,461,712.96
  5. Step 5: Solve for x
    x = 28,461,712.96/7,471.55
  6. Step 6: Final answer
    x = 3,809.35

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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.