Home / 9,217.47-12,720.68-5,239.36

Finding the Fourth Proportional to 9,217.47, 12,720.68 and 5,239.36

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Solution

The fourth proportional to 9,217.47, 12,720.68 and 5,239.36 is: 7,230.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,217.47 : 12,720.68 = 5,239.36 : x
  2. Step 2: Convert to fraction form
    9,217.47/12,720.68 = 5,239.36/x
  3. Step 3: Cross multiply
    9,217.47x = 12,720.68 × 5,239.36
  4. Step 4: Simplify right side
    9,217.47x = 66,648,221.96
  5. Step 5: Solve for x
    x = 66,648,221.96/9,217.47
  6. Step 6: Final answer
    x = 7,230.64

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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.