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Finding the Fourth Proportional to 7,481.40, 11,219.40 and 3,037.20

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Solution

The fourth proportional to 7,481.40, 11,219.40 and 3,037.20 is: 4,554.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,481.40 : 11,219.40 = 3,037.20 : x
  2. Step 2: Convert to fraction form
    7,481.40/11,219.40 = 3,037.20/x
  3. Step 3: Cross multiply
    7,481.40x = 11,219.40 × 3,037.20
  4. Step 4: Simplify right side
    7,481.40x = 34,075,561.68
  5. Step 5: Solve for x
    x = 34,075,561.68/7,481.40
  6. Step 6: Final answer
    x = 4,554.70

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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.