Home / 5,423.90-8,135.85-2,135.90

Finding the Fourth Proportional to 5,423.90, 8,135.85 and 2,135.90

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Solution

The fourth proportional to 5,423.90, 8,135.85 and 2,135.90 is: 3,203.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,423.90 : 8,135.85 = 2,135.90 : x
  2. Step 2: Convert to fraction form
    5,423.90/8,135.85 = 2,135.90/x
  3. Step 3: Cross multiply
    5,423.90x = 8,135.85 × 2,135.90
  4. Step 4: Simplify right side
    5,423.90x = 17,377,362.02
  5. Step 5: Solve for x
    x = 17,377,362.02/5,423.90
  6. Step 6: Final answer
    x = 3,203.85

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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.