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Finding the Fourth Proportional to 7,495.21, 11,242.80 and 2,230.20

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Solution

The fourth proportional to 7,495.21, 11,242.80 and 2,230.20 is: 3,345.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,495.21 : 11,242.80 = 2,230.20 : x
  2. Step 2: Convert to fraction form
    7,495.21/11,242.80 = 2,230.20/x
  3. Step 3: Cross multiply
    7,495.21x = 11,242.80 × 2,230.20
  4. Step 4: Simplify right side
    7,495.21x = 25,073,692.56
  5. Step 5: Solve for x
    x = 25,073,692.56/7,495.21
  6. Step 6: Final answer
    x = 3,345.30

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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.