Home / 3,399.75-4,689.77-2,140.35

Finding the Fourth Proportional to 3,399.75, 4,689.77 and 2,140.35

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Solution

The fourth proportional to 3,399.75, 4,689.77 and 2,140.35 is: 2,952.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,399.75 : 4,689.77 = 2,140.35 : x
  2. Step 2: Convert to fraction form
    3,399.75/4,689.77 = 2,140.35/x
  3. Step 3: Cross multiply
    3,399.75x = 4,689.77 × 2,140.35
  4. Step 4: Simplify right side
    3,399.75x = 10,037,749.22
  5. Step 5: Solve for x
    x = 10,037,749.22/3,399.75
  6. Step 6: Final answer
    x = 2,952.50

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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.