Home / 7,490.20-11,234.70-5,650.72

Finding the Fourth Proportional to 7,490.20, 11,234.70 and 5,650.72

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Solution

The fourth proportional to 7,490.20, 11,234.70 and 5,650.72 is: 8,475.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,490.20 : 11,234.70 = 5,650.72 : x
  2. Step 2: Convert to fraction form
    7,490.20/11,234.70 = 5,650.72/x
  3. Step 3: Cross multiply
    7,490.20x = 11,234.70 × 5,650.72
  4. Step 4: Simplify right side
    7,490.20x = 63,484,143.98
  5. Step 5: Solve for x
    x = 63,484,143.98/7,490.20
  6. Step 6: Final answer
    x = 8,475.63

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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.