Home / 5,405.20-8,102.90-1,941.64

Finding the Fourth Proportional to 5,405.20, 8,102.90 and 1,941.64

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Solution

The fourth proportional to 5,405.20, 8,102.90 and 1,941.64 is: 2,910.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,405.20 : 8,102.90 = 1,941.64 : x
  2. Step 2: Convert to fraction form
    5,405.20/8,102.90 = 1,941.64/x
  3. Step 3: Cross multiply
    5,405.20x = 8,102.90 × 1,941.64
  4. Step 4: Simplify right side
    5,405.20x = 15,732,914.76
  5. Step 5: Solve for x
    x = 15,732,914.76/5,405.20
  6. Step 6: Final answer
    x = 2,910.70

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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.