Home / 3,431.57-4,734.45-1,939.34

Finding the Fourth Proportional to 3,431.57, 4,734.45 and 1,939.34

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Solution

The fourth proportional to 3,431.57, 4,734.45 and 1,939.34 is: 2,675.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.57 : 4,734.45 = 1,939.34 : x
  2. Step 2: Convert to fraction form
    3,431.57/4,734.45 = 1,939.34/x
  3. Step 3: Cross multiply
    3,431.57x = 4,734.45 × 1,939.34
  4. Step 4: Simplify right side
    3,431.57x = 9,181,720.10
  5. Step 5: Solve for x
    x = 9,181,720.10/3,431.57
  6. Step 6: Final answer
    x = 2,675.67

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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.