Home / 4,078.45-6,115.75-1,580.81

Finding the Fourth Proportional to 4,078.45, 6,115.75 and 1,580.81

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Solution

The fourth proportional to 4,078.45, 6,115.75 and 1,580.81 is: 2,370.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,078.45 : 6,115.75 = 1,580.81 : x
  2. Step 2: Convert to fraction form
    4,078.45/6,115.75 = 1,580.81/x
  3. Step 3: Cross multiply
    4,078.45x = 6,115.75 × 1,580.81
  4. Step 4: Simplify right side
    4,078.45x = 9,667,834.81
  5. Step 5: Solve for x
    x = 9,667,834.81/4,078.45
  6. Step 6: Final answer
    x = 2,370.47

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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.