Home / 3,243.14-4,475.46-1,984.21

Finding the Fourth Proportional to 3,243.14, 4,475.46 and 1,984.21

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Solution

The fourth proportional to 3,243.14, 4,475.46 and 1,984.21 is: 2,738.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,243.14 : 4,475.46 = 1,984.21 : x
  2. Step 2: Convert to fraction form
    3,243.14/4,475.46 = 1,984.21/x
  3. Step 3: Cross multiply
    3,243.14x = 4,475.46 × 1,984.21
  4. Step 4: Simplify right side
    3,243.14x = 8,880,252.49
  5. Step 5: Solve for x
    x = 8,880,252.49/3,243.14
  6. Step 6: Final answer
    x = 2,738.17

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Double scale
Find fourth proportional to 3,244.14, 4,476.84 and 1,985.21
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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.