Home / 3,430.70-4,734.48-2,105.75

Finding the Fourth Proportional to 3,430.70, 4,734.48 and 2,105.75

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Solution

The fourth proportional to 3,430.70, 4,734.48 and 2,105.75 is: 2,906.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,430.70 : 4,734.48 = 2,105.75 : x
  2. Step 2: Convert to fraction form
    3,430.70/4,734.48 = 2,105.75/x
  3. Step 3: Cross multiply
    3,430.70x = 4,734.48 × 2,105.75
  4. Step 4: Simplify right side
    3,430.70x = 9,969,631.26
  5. Step 5: Solve for x
    x = 9,969,631.26/3,430.70
  6. Step 6: Final answer
    x = 2,906.00

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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.