Home / 4,135.92-5,699.88-2,809.68

Finding the Fourth Proportional to 4,135.92, 5,699.88 and 2,809.68

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Solution

The fourth proportional to 4,135.92, 5,699.88 and 2,809.68 is: 3,872.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,135.92 : 5,699.88 = 2,809.68 : x
  2. Step 2: Convert to fraction form
    4,135.92/5,699.88 = 2,809.68/x
  3. Step 3: Cross multiply
    4,135.92x = 5,699.88 × 2,809.68
  4. Step 4: Simplify right side
    4,135.92x = 16,014,838.84
  5. Step 5: Solve for x
    x = 16,014,838.84/4,135.92
  6. Step 6: Final answer
    x = 3,872.13

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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.