Home / 3,871,286.05-5,342,097.42-2,129,078.11

Finding the Fourth Proportional to 3,871,286.05, 5,342,097.42 and 2,129,078.11

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Solution

The fourth proportional to 3,871,286.05, 5,342,097.42 and 2,129,078.11 is: 2,937,975.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871,286.05 : 5,342,097.42 = 2,129,078.11 : x
  2. Step 2: Convert to fraction form
    3,871,286.05/5,342,097.42 = 2,129,078.11/x
  3. Step 3: Cross multiply
    3,871,286.05x = 5,342,097.42 × 2,129,078.11
  4. Step 4: Simplify right side
    3,871,286.05x = 11,373,742,678,409.47
  5. Step 5: Solve for x
    x = 11,373,742,678,409.47/3,871,286.05
  6. Step 6: Final answer
    x = 2,937,975.27

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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.