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Finding the Fourth Proportional to 2,980.84, 4,474.26 and 1,250.68

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Solution

The fourth proportional to 2,980.84, 4,474.26 and 1,250.68 is: 1,877.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,980.84 : 4,474.26 = 1,250.68 : x
  2. Step 2: Convert to fraction form
    2,980.84/4,474.26 = 1,250.68/x
  3. Step 3: Cross multiply
    2,980.84x = 4,474.26 × 1,250.68
  4. Step 4: Simplify right side
    2,980.84x = 5,595,867.50
  5. Step 5: Solve for x
    x = 5,595,867.50/2,980.84
  6. Step 6: Final answer
    x = 1,877.28

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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.