Home / 5,385.42-8,076.78-2,097.09

Finding the Fourth Proportional to 5,385.42, 8,076.78 and 2,097.09

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Solution

The fourth proportional to 5,385.42, 8,076.78 and 2,097.09 is: 3,145.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,385.42 : 8,076.78 = 2,097.09 : x
  2. Step 2: Convert to fraction form
    5,385.42/8,076.78 = 2,097.09/x
  3. Step 3: Cross multiply
    5,385.42x = 8,076.78 × 2,097.09
  4. Step 4: Simplify right side
    5,385.42x = 16,937,734.57
  5. Step 5: Solve for x
    x = 16,937,734.57/5,385.42
  6. Step 6: Final answer
    x = 3,145.11

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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.