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Finding the Fourth Proportional to 2,971.84, 4,459.44 and 1,240.48

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Solution

The fourth proportional to 2,971.84, 4,459.44 and 1,240.48 is: 1,861.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,971.84 : 4,459.44 = 1,240.48 : x
  2. Step 2: Convert to fraction form
    2,971.84/4,459.44 = 1,240.48/x
  3. Step 3: Cross multiply
    2,971.84x = 4,459.44 × 1,240.48
  4. Step 4: Simplify right side
    2,971.84x = 5,531,846.13
  5. Step 5: Solve for x
    x = 5,531,846.13/2,971.84
  6. Step 6: Final answer
    x = 1,861.42

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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.