Home / 9,151.23-12,628.63-5,172.33

Finding the Fourth Proportional to 9,151.23, 12,628.63 and 5,172.33

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Solution

The fourth proportional to 9,151.23, 12,628.63 and 5,172.33 is: 7,137.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,151.23 : 12,628.63 = 5,172.33 : x
  2. Step 2: Convert to fraction form
    9,151.23/12,628.63 = 5,172.33/x
  3. Step 3: Cross multiply
    9,151.23x = 12,628.63 × 5,172.33
  4. Step 4: Simplify right side
    9,151.23x = 65,319,474.66
  5. Step 5: Solve for x
    x = 65,319,474.66/9,151.23
  6. Step 6: Final answer
    x = 7,137.78

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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.