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Finding the Fourth Proportional to 2,480.50, 3,423.09 and 1,376.50

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Solution

The fourth proportional to 2,480.50, 3,423.09 and 1,376.50 is: 1,899.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,480.50 : 3,423.09 = 1,376.50 : x
  2. Step 2: Convert to fraction form
    2,480.50/3,423.09 = 1,376.50/x
  3. Step 3: Cross multiply
    2,480.50x = 3,423.09 × 1,376.50
  4. Step 4: Simplify right side
    2,480.50x = 4,711,883.39
  5. Step 5: Solve for x
    x = 4,711,883.39/2,480.50
  6. Step 6: Final answer
    x = 1,899.57

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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.