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Finding the Fourth Proportional to 5,082.36, 7,012.81 and 2,986.89

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Solution

The fourth proportional to 5,082.36, 7,012.81 and 2,986.89 is: 4,121.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,082.36 : 7,012.81 = 2,986.89 : x
  2. Step 2: Convert to fraction form
    5,082.36/7,012.81 = 2,986.89/x
  3. Step 3: Cross multiply
    5,082.36x = 7,012.81 × 2,986.89
  4. Step 4: Simplify right side
    5,082.36x = 20,946,492.06
  5. Step 5: Solve for x
    x = 20,946,492.06/5,082.36
  6. Step 6: Final answer
    x = 4,121.41

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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.