Home / 3,886.64-5,363.56-2,118.25

Finding the Fourth Proportional to 3,886.64, 5,363.56 and 2,118.25

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Solution

The fourth proportional to 3,886.64, 5,363.56 and 2,118.25 is: 2,923.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,886.64 : 5,363.56 = 2,118.25 : x
  2. Step 2: Convert to fraction form
    3,886.64/5,363.56 = 2,118.25/x
  3. Step 3: Cross multiply
    3,886.64x = 5,363.56 × 2,118.25
  4. Step 4: Simplify right side
    3,886.64x = 11,361,342.27
  5. Step 5: Solve for x
    x = 11,361,342.27/3,886.64
  6. Step 6: Final answer
    x = 2,923.18

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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.