Home / 7,103.53-10,654.85-2,172.78

Finding the Fourth Proportional to 7,103.53, 10,654.85 and 2,172.78

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Solution

The fourth proportional to 7,103.53, 10,654.85 and 2,172.78 is: 3,259.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,103.53 : 10,654.85 = 2,172.78 : x
  2. Step 2: Convert to fraction form
    7,103.53/10,654.85 = 2,172.78/x
  3. Step 3: Cross multiply
    7,103.53x = 10,654.85 × 2,172.78
  4. Step 4: Simplify right side
    7,103.53x = 23,150,650.41
  5. Step 5: Solve for x
    x = 23,150,650.41/7,103.53
  6. Step 6: Final answer
    x = 3,259.03

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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.