Home / 3,809.84-5,260.34-2,867.81

Finding the Fourth Proportional to 3,809.84, 5,260.34 and 2,867.81

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Solution

The fourth proportional to 3,809.84, 5,260.34 and 2,867.81 is: 3,959.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,809.84 : 5,260.34 = 2,867.81 : x
  2. Step 2: Convert to fraction form
    3,809.84/5,260.34 = 2,867.81/x
  3. Step 3: Cross multiply
    3,809.84x = 5,260.34 × 2,867.81
  4. Step 4: Simplify right side
    3,809.84x = 15,085,636.52
  5. Step 5: Solve for x
    x = 15,085,636.52/3,809.84
  6. Step 6: Final answer
    x = 3,959.66

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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.