Home / 3,886.46-5,363.32-2,118.07

Finding the Fourth Proportional to 3,886.46, 5,363.32 and 2,118.07

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Solution

The fourth proportional to 3,886.46, 5,363.32 and 2,118.07 is: 2,922.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,886.46 : 5,363.32 = 2,118.07 : x
  2. Step 2: Convert to fraction form
    3,886.46/5,363.32 = 2,118.07/x
  3. Step 3: Cross multiply
    3,886.46x = 5,363.32 × 2,118.07
  4. Step 4: Simplify right side
    3,886.46x = 11,359,849.79
  5. Step 5: Solve for x
    x = 11,359,849.79/3,886.46
  6. Step 6: Final answer
    x = 2,922.93

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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.