Home / 2,113.74-3,180.87-1,912.32

Finding the Fourth Proportional to 2,113.74, 3,180.87 and 1,912.32

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Solution

The fourth proportional to 2,113.74, 3,180.87 and 1,912.32 is: 2,877.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,113.74 : 3,180.87 = 1,912.32 : x
  2. Step 2: Convert to fraction form
    2,113.74/3,180.87 = 1,912.32/x
  3. Step 3: Cross multiply
    2,113.74x = 3,180.87 × 1,912.32
  4. Step 4: Simplify right side
    2,113.74x = 6,082,841.32
  5. Step 5: Solve for x
    x = 6,082,841.32/2,113.74
  6. Step 6: Final answer
    x = 2,877.76

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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.