Home / 3,685.29-5,084.87-2,112.57

Finding the Fourth Proportional to 3,685.29, 5,084.87 and 2,112.57

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Solution

The fourth proportional to 3,685.29, 5,084.87 and 2,112.57 is: 2,914.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,685.29 : 5,084.87 = 2,112.57 : x
  2. Step 2: Convert to fraction form
    3,685.29/5,084.87 = 2,112.57/x
  3. Step 3: Cross multiply
    3,685.29x = 5,084.87 × 2,112.57
  4. Step 4: Simplify right side
    3,685.29x = 10,742,133.25
  5. Step 5: Solve for x
    x = 10,742,133.25/3,685.29
  6. Step 6: Final answer
    x = 2,914.87

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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.