Home / 2,931.08-4,394.14-1,286.38

Finding the Fourth Proportional to 2,931.08, 4,394.14 and 1,286.38

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Solution

The fourth proportional to 2,931.08, 4,394.14 and 1,286.38 is: 1,928.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.08 : 4,394.14 = 1,286.38 : x
  2. Step 2: Convert to fraction form
    2,931.08/4,394.14 = 1,286.38/x
  3. Step 3: Cross multiply
    2,931.08x = 4,394.14 × 1,286.38
  4. Step 4: Simplify right side
    2,931.08x = 5,652,533.81
  5. Step 5: Solve for x
    x = 5,652,533.81/2,931.08
  6. Step 6: Final answer
    x = 1,928.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.