Home / 3,985.68-5,500.08-2,217.12

Finding the Fourth Proportional to 3,985.68, 5,500.08 and 2,217.12

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Solution

The fourth proportional to 3,985.68, 5,500.08 and 2,217.12 is: 3,059.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985.68 : 5,500.08 = 2,217.12 : x
  2. Step 2: Convert to fraction form
    3,985.68/5,500.08 = 2,217.12/x
  3. Step 3: Cross multiply
    3,985.68x = 5,500.08 × 2,217.12
  4. Step 4: Simplify right side
    3,985.68x = 12,194,337.37
  5. Step 5: Solve for x
    x = 12,194,337.37/3,985.68
  6. Step 6: Final answer
    x = 3,059.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.