Home / 9,217.40-12,720.24-5,238.68

Finding the Fourth Proportional to 9,217.40, 12,720.24 and 5,238.68

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Solution

The fourth proportional to 9,217.40, 12,720.24 and 5,238.68 is: 7,229.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,217.40 : 12,720.24 = 5,238.68 : x
  2. Step 2: Convert to fraction form
    9,217.40/12,720.24 = 5,238.68/x
  3. Step 3: Cross multiply
    9,217.40x = 12,720.24 × 5,238.68
  4. Step 4: Simplify right side
    9,217.40x = 66,637,203.28
  5. Step 5: Solve for x
    x = 66,637,203.28/9,217.40
  6. Step 6: Final answer
    x = 7,229.51

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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.