Home / 9,151.32-12,628.92-5,172.48

Finding the Fourth Proportional to 9,151.32, 12,628.92 and 5,172.48

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Solution

The fourth proportional to 9,151.32, 12,628.92 and 5,172.48 is: 7,138.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,151.32 : 12,628.92 = 5,172.48 : x
  2. Step 2: Convert to fraction form
    9,151.32/12,628.92 = 5,172.48/x
  3. Step 3: Cross multiply
    9,151.32x = 12,628.92 × 5,172.48
  4. Step 4: Simplify right side
    9,151.32x = 65,322,836.12
  5. Step 5: Solve for x
    x = 65,322,836.12/9,151.32
  6. Step 6: Final answer
    x = 7,138.08

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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.