Home / 9,364.16-12,921.44-5,172.16

Finding the Fourth Proportional to 9,364.16, 12,921.44 and 5,172.16

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Solution

The fourth proportional to 9,364.16, 12,921.44 and 5,172.16 is: 7,136.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,364.16 : 12,921.44 = 5,172.16 : x
  2. Step 2: Convert to fraction form
    9,364.16/12,921.44 = 5,172.16/x
  3. Step 3: Cross multiply
    9,364.16x = 12,921.44 × 5,172.16
  4. Step 4: Simplify right side
    9,364.16x = 66,831,755.11
  5. Step 5: Solve for x
    x = 66,831,755.11/9,364.16
  6. Step 6: Final answer
    x = 7,136.97

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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.