Home / 7,487.40-11,235.15-3,105.30

Finding the Fourth Proportional to 7,487.40, 11,235.15 and 3,105.30

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Solution

The fourth proportional to 7,487.40, 11,235.15 and 3,105.30 is: 4,659.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,487.40 : 11,235.15 = 3,105.30 : x
  2. Step 2: Convert to fraction form
    7,487.40/11,235.15 = 3,105.30/x
  3. Step 3: Cross multiply
    7,487.40x = 11,235.15 × 3,105.30
  4. Step 4: Simplify right side
    7,487.40x = 34,888,511.30
  5. Step 5: Solve for x
    x = 34,888,511.30/7,487.40
  6. Step 6: Final answer
    x = 4,659.63

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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.