Home / 2,777.68-4,161.93-1,389.61

Finding the Fourth Proportional to 2,777.68, 4,161.93 and 1,389.61

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Solution

The fourth proportional to 2,777.68, 4,161.93 and 1,389.61 is: 2,082.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,777.68 : 4,161.93 = 1,389.61 : x
  2. Step 2: Convert to fraction form
    2,777.68/4,161.93 = 1,389.61/x
  3. Step 3: Cross multiply
    2,777.68x = 4,161.93 × 1,389.61
  4. Step 4: Simplify right side
    2,777.68x = 5,783,459.55
  5. Step 5: Solve for x
    x = 5,783,459.55/2,777.68
  6. Step 6: Final answer
    x = 2,082.12

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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.