Home / 3,985.50-5,499.92-2,217.07

Finding the Fourth Proportional to 3,985.50, 5,499.92 and 2,217.07

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Solution

The fourth proportional to 3,985.50, 5,499.92 and 2,217.07 is: 3,059.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985.50 : 5,499.92 = 2,217.07 : x
  2. Step 2: Convert to fraction form
    3,985.50/5,499.92 = 2,217.07/x
  3. Step 3: Cross multiply
    3,985.50x = 5,499.92 × 2,217.07
  4. Step 4: Simplify right side
    3,985.50x = 12,193,707.63
  5. Step 5: Solve for x
    x = 12,193,707.63/3,985.50
  6. Step 6: Final answer
    x = 3,059.52

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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.