Home / 9,209.39-12,708.02-5,229.72

Finding the Fourth Proportional to 9,209.39, 12,708.02 and 5,229.72

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Solution

The fourth proportional to 9,209.39, 12,708.02 and 5,229.72 is: 7,216.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,209.39 : 12,708.02 = 5,229.72 : x
  2. Step 2: Convert to fraction form
    9,209.39/12,708.02 = 5,229.72/x
  3. Step 3: Cross multiply
    9,209.39x = 12,708.02 × 5,229.72
  4. Step 4: Simplify right side
    9,209.39x = 66,459,399.43
  5. Step 5: Solve for x
    x = 66,459,399.43/9,209.39
  6. Step 6: Final answer
    x = 7,216.49

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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.