Home / 7,524.45-11,288.48-3,139.47

Finding the Fourth Proportional to 7,524.45, 11,288.48 and 3,139.47

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Solution

The fourth proportional to 7,524.45, 11,288.48 and 3,139.47 is: 4,709.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,524.45 : 11,288.48 = 3,139.47 : x
  2. Step 2: Convert to fraction form
    7,524.45/11,288.48 = 3,139.47/x
  3. Step 3: Cross multiply
    7,524.45x = 11,288.48 × 3,139.47
  4. Step 4: Simplify right side
    7,524.45x = 35,439,828.61
  5. Step 5: Solve for x
    x = 35,439,828.61/7,524.45
  6. Step 6: Final answer
    x = 4,709.96

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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.