Home / 5,389.68-8,082.90-2,101.89

Finding the Fourth Proportional to 5,389.68, 8,082.90 and 2,101.89

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Solution

The fourth proportional to 5,389.68, 8,082.90 and 2,101.89 is: 3,152.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,389.68 : 8,082.90 = 2,101.89 : x
  2. Step 2: Convert to fraction form
    5,389.68/8,082.90 = 2,101.89/x
  3. Step 3: Cross multiply
    5,389.68x = 8,082.90 × 2,101.89
  4. Step 4: Simplify right side
    5,389.68x = 16,989,366.68
  5. Step 5: Solve for x
    x = 16,989,366.68/5,389.68
  6. Step 6: Final answer
    x = 3,152.20

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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.