Home / 7,409.64-11,115.68-3,511.92

Finding the Fourth Proportional to 7,409.64, 11,115.68 and 3,511.92

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Solution

The fourth proportional to 7,409.64, 11,115.68 and 3,511.92 is: 5,268.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,409.64 : 11,115.68 = 3,511.92 : x
  2. Step 2: Convert to fraction form
    7,409.64/11,115.68 = 3,511.92/x
  3. Step 3: Cross multiply
    7,409.64x = 11,115.68 × 3,511.92
  4. Step 4: Simplify right side
    7,409.64x = 39,037,361.35
  5. Step 5: Solve for x
    x = 39,037,361.35/7,409.64
  6. Step 6: Final answer
    x = 5,268.46

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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.