Home / 6,478.11-9,718.61-1,860.75

Finding the Fourth Proportional to 6,478.11, 9,718.61 and 1,860.75

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Solution

The fourth proportional to 6,478.11, 9,718.61 and 1,860.75 is: 2,791.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,478.11 : 9,718.61 = 1,860.75 : x
  2. Step 2: Convert to fraction form
    6,478.11/9,718.61 = 1,860.75/x
  3. Step 3: Cross multiply
    6,478.11x = 9,718.61 × 1,860.75
  4. Step 4: Simplify right side
    6,478.11x = 18,083,894.25
  5. Step 5: Solve for x
    x = 18,083,894.25/6,478.11
  6. Step 6: Final answer
    x = 2,791.54

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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.