Home / 9,217.54-12,720.22-5,239.42

Finding the Fourth Proportional to 9,217.54, 12,720.22 and 5,239.42

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Solution

The fourth proportional to 9,217.54, 12,720.22 and 5,239.42 is: 7,230.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,217.54 : 12,720.22 = 5,239.42 : x
  2. Step 2: Convert to fraction form
    9,217.54/12,720.22 = 5,239.42/x
  3. Step 3: Cross multiply
    9,217.54x = 12,720.22 × 5,239.42
  4. Step 4: Simplify right side
    9,217.54x = 66,646,530.17
  5. Step 5: Solve for x
    x = 66,646,530.17/9,217.54
  6. Step 6: Final answer
    x = 7,230.40

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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.