Home / 7,520.20-11,278.98-2,840.62

Finding the Fourth Proportional to 7,520.20, 11,278.98 and 2,840.62

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Solution

The fourth proportional to 7,520.20, 11,278.98 and 2,840.62 is: 4,260.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,520.20 : 11,278.98 = 2,840.62 : x
  2. Step 2: Convert to fraction form
    7,520.20/11,278.98 = 2,840.62/x
  3. Step 3: Cross multiply
    7,520.20x = 11,278.98 × 2,840.62
  4. Step 4: Simplify right side
    7,520.20x = 32,039,296.17
  5. Step 5: Solve for x
    x = 32,039,296.17/7,520.20
  6. Step 6: Final answer
    x = 4,260.43

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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.