Home / 2,823.12-3,894.61-1,643.50

Finding the Fourth Proportional to 2,823.12, 3,894.61 and 1,643.50

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Solution

The fourth proportional to 2,823.12, 3,894.61 and 1,643.50 is: 2,267.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,823.12 : 3,894.61 = 1,643.50 : x
  2. Step 2: Convert to fraction form
    2,823.12/3,894.61 = 1,643.50/x
  3. Step 3: Cross multiply
    2,823.12x = 3,894.61 × 1,643.50
  4. Step 4: Simplify right side
    2,823.12x = 6,400,791.54
  5. Step 5: Solve for x
    x = 6,400,791.54/2,823.12
  6. Step 6: Final answer
    x = 2,267.28

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1.5x scale

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.