Home / 9,328.14-12,872.79-5,136.12

Finding the Fourth Proportional to 9,328.14, 12,872.79 and 5,136.12

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Solution

The fourth proportional to 9,328.14, 12,872.79 and 5,136.12 is: 7,087.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,328.14 : 12,872.79 = 5,136.12 : x
  2. Step 2: Convert to fraction form
    9,328.14/12,872.79 = 5,136.12/x
  3. Step 3: Cross multiply
    9,328.14x = 12,872.79 × 5,136.12
  4. Step 4: Simplify right side
    9,328.14x = 66,116,194.17
  5. Step 5: Solve for x
    x = 66,116,194.17/9,328.14
  6. Step 6: Final answer
    x = 7,087.82

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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.