Home / 4,086.08-5,639.12-3,421.79

Finding the Fourth Proportional to 4,086.08, 5,639.12 and 3,421.79

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Solution

The fourth proportional to 4,086.08, 5,639.12 and 3,421.79 is: 4,722.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,086.08 : 5,639.12 = 3,421.79 : x
  2. Step 2: Convert to fraction form
    4,086.08/5,639.12 = 3,421.79/x
  3. Step 3: Cross multiply
    4,086.08x = 5,639.12 × 3,421.79
  4. Step 4: Simplify right side
    4,086.08x = 19,295,884.42
  5. Step 5: Solve for x
    x = 19,295,884.42/4,086.08
  6. Step 6: Final answer
    x = 4,722.35

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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.