Home / 2,203.87-3,321.25-2,065.45

Finding the Fourth Proportional to 2,203.87, 3,321.25 and 2,065.45

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Solution

The fourth proportional to 2,203.87, 3,321.25 and 2,065.45 is: 3,112.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,203.87 : 3,321.25 = 2,065.45 : x
  2. Step 2: Convert to fraction form
    2,203.87/3,321.25 = 2,065.45/x
  3. Step 3: Cross multiply
    2,203.87x = 3,321.25 × 2,065.45
  4. Step 4: Simplify right side
    2,203.87x = 6,859,875.81
  5. Step 5: Solve for x
    x = 6,859,875.81/2,203.87
  6. Step 6: Final answer
    x = 3,112.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.