Home / 3,653.20-5,479.57-2,421.42

Finding the Fourth Proportional to 3,653.20, 5,479.57 and 2,421.42

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Solution

The fourth proportional to 3,653.20, 5,479.57 and 2,421.42 is: 3,631.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,653.20 : 5,479.57 = 2,421.42 : x
  2. Step 2: Convert to fraction form
    3,653.20/5,479.57 = 2,421.42/x
  3. Step 3: Cross multiply
    3,653.20x = 5,479.57 × 2,421.42
  4. Step 4: Simplify right side
    3,653.20x = 13,268,345.09
  5. Step 5: Solve for x
    x = 13,268,345.09/3,653.20
  6. Step 6: Final answer
    x = 3,631.98

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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.