Home / 2,762.91-4,139.10-2,143.56

Finding the Fourth Proportional to 2,762.91, 4,139.10 and 2,143.56

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Solution

The fourth proportional to 2,762.91, 4,139.10 and 2,143.56 is: 3,211.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,762.91 : 4,139.10 = 2,143.56 : x
  2. Step 2: Convert to fraction form
    2,762.91/4,139.10 = 2,143.56/x
  3. Step 3: Cross multiply
    2,762.91x = 4,139.10 × 2,143.56
  4. Step 4: Simplify right side
    2,762.91x = 8,872,409.20
  5. Step 5: Solve for x
    x = 8,872,409.20/2,762.91
  6. Step 6: Final answer
    x = 3,211.26

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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.