Home / 4,920.32-7,380.12-2,145.44

Finding the Fourth Proportional to 4,920.32, 7,380.12 and 2,145.44

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Solution

The fourth proportional to 4,920.32, 7,380.12 and 2,145.44 is: 3,218.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,920.32 : 7,380.12 = 2,145.44 : x
  2. Step 2: Convert to fraction form
    4,920.32/7,380.12 = 2,145.44/x
  3. Step 3: Cross multiply
    4,920.32x = 7,380.12 × 2,145.44
  4. Step 4: Simplify right side
    4,920.32x = 15,833,604.65
  5. Step 5: Solve for x
    x = 15,833,604.65/4,920.32
  6. Step 6: Final answer
    x = 3,218.00

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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.