Home / 2,646.20-3,650.34-2,149.40

Finding the Fourth Proportional to 2,646.20, 3,650.34 and 2,149.40

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Solution

The fourth proportional to 2,646.20, 3,650.34 and 2,149.40 is: 2,965.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,646.20 : 3,650.34 = 2,149.40 : x
  2. Step 2: Convert to fraction form
    2,646.20/3,650.34 = 2,149.40/x
  3. Step 3: Cross multiply
    2,646.20x = 3,650.34 × 2,149.40
  4. Step 4: Simplify right side
    2,646.20x = 7,846,040.80
  5. Step 5: Solve for x
    x = 7,846,040.80/2,646.20
  6. Step 6: Final answer
    x = 2,965.02

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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.