Home / 4,286.96-6,421.92-2,089.28

Finding the Fourth Proportional to 4,286.96, 6,421.92 and 2,089.28

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Solution

The fourth proportional to 4,286.96, 6,421.92 and 2,089.28 is: 3,129.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,286.96 : 6,421.92 = 2,089.28 : x
  2. Step 2: Convert to fraction form
    4,286.96/6,421.92 = 2,089.28/x
  3. Step 3: Cross multiply
    4,286.96x = 6,421.92 × 2,089.28
  4. Step 4: Simplify right side
    4,286.96x = 13,417,189.02
  5. Step 5: Solve for x
    x = 13,417,189.02/4,286.96
  6. Step 6: Final answer
    x = 3,129.77

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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.