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Finding the Fourth Proportional to 3,313.98, 4,971.06 and 1,122.84

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Solution

The fourth proportional to 3,313.98, 4,971.06 and 1,122.84 is: 1,684.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,313.98 : 4,971.06 = 1,122.84 : x
  2. Step 2: Convert to fraction form
    3,313.98/4,971.06 = 1,122.84/x
  3. Step 3: Cross multiply
    3,313.98x = 4,971.06 × 1,122.84
  4. Step 4: Simplify right side
    3,313.98x = 5,581,705.01
  5. Step 5: Solve for x
    x = 5,581,705.01/3,313.98
  6. Step 6: Final answer
    x = 1,684.29

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1.5x scale

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.