Home / 9,364.20-12,921.66-5,172.18

Finding the Fourth Proportional to 9,364.20, 12,921.66 and 5,172.18

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Solution

The fourth proportional to 9,364.20, 12,921.66 and 5,172.18 is: 7,137.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,364.20 : 12,921.66 = 5,172.18 : x
  2. Step 2: Convert to fraction form
    9,364.20/12,921.66 = 5,172.18/x
  3. Step 3: Cross multiply
    9,364.20x = 12,921.66 × 5,172.18
  4. Step 4: Simplify right side
    9,364.20x = 66,833,151.42
  5. Step 5: Solve for x
    x = 66,833,151.42/9,364.20
  6. Step 6: Final answer
    x = 7,137.09

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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.