Home / 1,912.11-2,868.29-525.54

Finding the Fourth Proportional to 1,912.11, 2,868.29 and 525.54

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Solution

The fourth proportional to 1,912.11, 2,868.29 and 525.54 is: 788.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.11 : 2,868.29 = 525.54 : x
  2. Step 2: Convert to fraction form
    1,912.11/2,868.29 = 525.54/x
  3. Step 3: Cross multiply
    1,912.11x = 2,868.29 × 525.54
  4. Step 4: Simplify right side
    1,912.11x = 1,507,401.13
  5. Step 5: Solve for x
    x = 1,507,401.13/1,912.11
  6. Step 6: Final answer
    x = 788.34

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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.