Home / 5,429.20-8,138.24-2,140.96

Finding the Fourth Proportional to 5,429.20, 8,138.24 and 2,140.96

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Solution

The fourth proportional to 5,429.20, 8,138.24 and 2,140.96 is: 3,209.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,429.20 : 8,138.24 = 2,140.96 : x
  2. Step 2: Convert to fraction form
    5,429.20/8,138.24 = 2,140.96/x
  3. Step 3: Cross multiply
    5,429.20x = 8,138.24 × 2,140.96
  4. Step 4: Simplify right side
    5,429.20x = 17,423,646.31
  5. Step 5: Solve for x
    x = 17,423,646.31/5,429.20
  6. Step 6: Final answer
    x = 3,209.25

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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.