Home / 3,886.61-5,363.18-2,185.01

Finding the Fourth Proportional to 3,886.61, 5,363.18 and 2,185.01

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Solution

The fourth proportional to 3,886.61, 5,363.18 and 2,185.01 is: 3,015.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,886.61 : 5,363.18 = 2,185.01 : x
  2. Step 2: Convert to fraction form
    3,886.61/5,363.18 = 2,185.01/x
  3. Step 3: Cross multiply
    3,886.61x = 5,363.18 × 2,185.01
  4. Step 4: Simplify right side
    3,886.61x = 11,718,564.19
  5. Step 5: Solve for x
    x = 11,718,564.19/3,886.61
  6. Step 6: Final answer
    x = 3,015.12

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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.