Home / 4,129.71-5,699.69-2,638.37

Finding the Fourth Proportional to 4,129.71, 5,699.69 and 2,638.37

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Solution

The fourth proportional to 4,129.71, 5,699.69 and 2,638.37 is: 3,641.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,129.71 : 5,699.69 = 2,638.37 : x
  2. Step 2: Convert to fraction form
    4,129.71/5,699.69 = 2,638.37/x
  3. Step 3: Cross multiply
    4,129.71x = 5,699.69 × 2,638.37
  4. Step 4: Simplify right side
    4,129.71x = 15,037,849.42
  5. Step 5: Solve for x
    x = 15,037,849.42/4,129.71
  6. Step 6: Final answer
    x = 3,641.38

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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.