Home / 9,409.50-12,985.19-5,217.75

Finding the Fourth Proportional to 9,409.50, 12,985.19 and 5,217.75

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Solution

The fourth proportional to 9,409.50, 12,985.19 and 5,217.75 is: 7,200.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,409.50 : 12,985.19 = 5,217.75 : x
  2. Step 2: Convert to fraction form
    9,409.50/12,985.19 = 5,217.75/x
  3. Step 3: Cross multiply
    9,409.50x = 12,985.19 × 5,217.75
  4. Step 4: Simplify right side
    9,409.50x = 67,753,449.03
  5. Step 5: Solve for x
    x = 67,753,449.03/9,409.50
  6. Step 6: Final answer
    x = 7,200.54

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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.