Home / 2,479.68-3,421.80-2,240.64

Finding the Fourth Proportional to 2,479.68, 3,421.80 and 2,240.64

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Solution

The fourth proportional to 2,479.68, 3,421.80 and 2,240.64 is: 3,091.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,479.68 : 3,421.80 = 2,240.64 : x
  2. Step 2: Convert to fraction form
    2,479.68/3,421.80 = 2,240.64/x
  3. Step 3: Cross multiply
    2,479.68x = 3,421.80 × 2,240.64
  4. Step 4: Simplify right side
    2,479.68x = 7,667,021.95
  5. Step 5: Solve for x
    x = 7,667,021.95/2,479.68
  6. Step 6: Final answer
    x = 3,091.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.