Home / 3,210.93-4,431.05-2,255.18

Finding the Fourth Proportional to 3,210.93, 4,431.05 and 2,255.18

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Solution

The fourth proportional to 3,210.93, 4,431.05 and 2,255.18 is: 3,112.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,210.93 : 4,431.05 = 2,255.18 : x
  2. Step 2: Convert to fraction form
    3,210.93/4,431.05 = 2,255.18/x
  3. Step 3: Cross multiply
    3,210.93x = 4,431.05 × 2,255.18
  4. Step 4: Simplify right side
    3,210.93x = 9,992,781.91
  5. Step 5: Solve for x
    x = 9,992,781.91/3,210.93
  6. Step 6: Final answer
    x = 3,112.11

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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.