Home / 3,887.58-5,364.86-2,119.19

Finding the Fourth Proportional to 3,887.58, 5,364.86 and 2,119.19

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Solution

The fourth proportional to 3,887.58, 5,364.86 and 2,119.19 is: 2,924.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,887.58 : 5,364.86 = 2,119.19 : x
  2. Step 2: Convert to fraction form
    3,887.58/5,364.86 = 2,119.19/x
  3. Step 3: Cross multiply
    3,887.58x = 5,364.86 × 2,119.19
  4. Step 4: Simplify right side
    3,887.58x = 11,369,141.29
  5. Step 5: Solve for x
    x = 11,369,141.29/3,887.58
  6. Step 6: Final answer
    x = 2,924.48

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Half scale
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Double scale
Find fourth proportional to 3,888.58, 5,366.24 and 2,120.19
Similar ratio
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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.