Home / 3,423.45-5,129.10-2,803.80

Finding the Fourth Proportional to 3,423.45, 5,129.10 and 2,803.80

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Solution

The fourth proportional to 3,423.45, 5,129.10 and 2,803.80 is: 4,200.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,423.45 : 5,129.10 = 2,803.80 : x
  2. Step 2: Convert to fraction form
    3,423.45/5,129.10 = 2,803.80/x
  3. Step 3: Cross multiply
    3,423.45x = 5,129.10 × 2,803.80
  4. Step 4: Simplify right side
    3,423.45x = 14,380,970.58
  5. Step 5: Solve for x
    x = 14,380,970.58/3,423.45
  6. Step 6: Final answer
    x = 4,200.72

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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.