Home / 1,912.76-2,638.92-1,354.16

Finding the Fourth Proportional to 1,912.76, 2,638.92 and 1,354.16

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Solution

The fourth proportional to 1,912.76, 2,638.92 and 1,354.16 is: 1,868.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.76 : 2,638.92 = 1,354.16 : x
  2. Step 2: Convert to fraction form
    1,912.76/2,638.92 = 1,354.16/x
  3. Step 3: Cross multiply
    1,912.76x = 2,638.92 × 1,354.16
  4. Step 4: Simplify right side
    1,912.76x = 3,573,519.91
  5. Step 5: Solve for x
    x = 3,573,519.91/1,912.76
  6. Step 6: Final answer
    x = 1,868.25

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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.