Home / 3,928.50-5,895.45-1,620

Finding the Fourth Proportional to 3,928.50, 5,895.45 and 1,620

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Solution

The fourth proportional to 3,928.50, 5,895.45 and 1,620 is: 2,431.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.50 : 5,895.45 = 1,620 : x
  2. Step 2: Convert to fraction form
    3,928.50/5,895.45 = 1,620/x
  3. Step 3: Cross multiply
    3,928.50x = 5,895.45 × 1,620
  4. Step 4: Simplify right side
    3,928.50x = 9,550,629
  5. Step 5: Solve for x
    x = 9,550,629/3,928.50
  6. Step 6: Final answer
    x = 2,431.11

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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.