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Finding the Fourth Proportional to 9,082.40, 13,625.40 and 7,631.60

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Solution

The fourth proportional to 9,082.40, 13,625.40 and 7,631.60 is: 11,448.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,082.40 : 13,625.40 = 7,631.60 : x
  2. Step 2: Convert to fraction form
    9,082.40/13,625.40 = 7,631.60/x
  3. Step 3: Cross multiply
    9,082.40x = 13,625.40 × 7,631.60
  4. Step 4: Simplify right side
    9,082.40x = 103,983,602.64
  5. Step 5: Solve for x
    x = 103,983,602.64/9,082.40
  6. Step 6: Final answer
    x = 11,448.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.