Home / 3,077.96-4,238.92-2,880.32

Finding the Fourth Proportional to 3,077.96, 4,238.92 and 2,880.32

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Solution

The fourth proportional to 3,077.96, 4,238.92 and 2,880.32 is: 3,966.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,077.96 : 4,238.92 = 2,880.32 : x
  2. Step 2: Convert to fraction form
    3,077.96/4,238.92 = 2,880.32/x
  3. Step 3: Cross multiply
    3,077.96x = 4,238.92 × 2,880.32
  4. Step 4: Simplify right side
    3,077.96x = 12,209,446.05
  5. Step 5: Solve for x
    x = 12,209,446.05/3,077.96
  6. Step 6: Final answer
    x = 3,966.73

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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.