Home / 7,489.20-11,235.15-3,107.10

Finding the Fourth Proportional to 7,489.20, 11,235.15 and 3,107.10

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Solution

The fourth proportional to 7,489.20, 11,235.15 and 3,107.10 is: 4,661.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,489.20 : 11,235.15 = 3,107.10 : x
  2. Step 2: Convert to fraction form
    7,489.20/11,235.15 = 3,107.10/x
  3. Step 3: Cross multiply
    7,489.20x = 11,235.15 × 3,107.10
  4. Step 4: Simplify right side
    7,489.20x = 34,908,734.57
  5. Step 5: Solve for x
    x = 34,908,734.57/7,489.20
  6. Step 6: Final answer
    x = 4,661.21

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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.