Home / 2,376.75-3,280.20-1,977.72

Finding the Fourth Proportional to 2,376.75, 3,280.20 and 1,977.72

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Solution

The fourth proportional to 2,376.75, 3,280.20 and 1,977.72 is: 2,729.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,376.75 : 3,280.20 = 1,977.72 : x
  2. Step 2: Convert to fraction form
    2,376.75/3,280.20 = 1,977.72/x
  3. Step 3: Cross multiply
    2,376.75x = 3,280.20 × 1,977.72
  4. Step 4: Simplify right side
    2,376.75x = 6,487,297.43
  5. Step 5: Solve for x
    x = 6,487,297.43/2,376.75
  6. Step 6: Final answer
    x = 2,729.48

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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.