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Finding the Fourth Proportional to 2,876.78, 4,313.01 and 1,488.26

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Solution

The fourth proportional to 2,876.78, 4,313.01 and 1,488.26 is: 2,231.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,876.78 : 4,313.01 = 1,488.26 : x
  2. Step 2: Convert to fraction form
    2,876.78/4,313.01 = 1,488.26/x
  3. Step 3: Cross multiply
    2,876.78x = 4,313.01 × 1,488.26
  4. Step 4: Simplify right side
    2,876.78x = 6,418,880.26
  5. Step 5: Solve for x
    x = 6,418,880.26/2,876.78
  6. Step 6: Final answer
    x = 2,231.27

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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.