Home / 9,728.43-13,425.03-5,479.47

Finding the Fourth Proportional to 9,728.43, 13,425.03 and 5,479.47

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Solution

The fourth proportional to 9,728.43, 13,425.03 and 5,479.47 is: 7,561.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,728.43 : 13,425.03 = 5,479.47 : x
  2. Step 2: Convert to fraction form
    9,728.43/13,425.03 = 5,479.47/x
  3. Step 3: Cross multiply
    9,728.43x = 13,425.03 × 5,479.47
  4. Step 4: Simplify right side
    9,728.43x = 73,562,049.13
  5. Step 5: Solve for x
    x = 73,562,049.13/9,728.43
  6. Step 6: Final answer
    x = 7,561.55

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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.