Home / 3,758.31-5,638.26-1,125.78

Finding the Fourth Proportional to 3,758.31, 5,638.26 and 1,125.78

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Solution

The fourth proportional to 3,758.31, 5,638.26 and 1,125.78 is: 1,688.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,758.31 : 5,638.26 = 1,125.78 : x
  2. Step 2: Convert to fraction form
    3,758.31/5,638.26 = 1,125.78/x
  3. Step 3: Cross multiply
    3,758.31x = 5,638.26 × 1,125.78
  4. Step 4: Simplify right side
    3,758.31x = 6,347,440.34
  5. Step 5: Solve for x
    x = 6,347,440.34/3,758.31
  6. Step 6: Final answer
    x = 1,688.91

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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.