Home / 4,638.56-6,400.89-2,649.20

Finding the Fourth Proportional to 4,638.56, 6,400.89 and 2,649.20

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Solution

The fourth proportional to 4,638.56, 6,400.89 and 2,649.20 is: 3,655.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,638.56 : 6,400.89 = 2,649.20 : x
  2. Step 2: Convert to fraction form
    4,638.56/6,400.89 = 2,649.20/x
  3. Step 3: Cross multiply
    4,638.56x = 6,400.89 × 2,649.20
  4. Step 4: Simplify right side
    4,638.56x = 16,957,205.78
  5. Step 5: Solve for x
    x = 16,957,205.78/4,638.56
  6. Step 6: Final answer
    x = 3,655.71

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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.