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Finding the Fourth Proportional to 2,889.65, 4,328.40 and 2,403.65

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Solution

The fourth proportional to 2,889.65, 4,328.40 and 2,403.65 is: 3,600.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,889.65 : 4,328.40 = 2,403.65 : x
  2. Step 2: Convert to fraction form
    2,889.65/4,328.40 = 2,403.65/x
  3. Step 3: Cross multiply
    2,889.65x = 4,328.40 × 2,403.65
  4. Step 4: Simplify right side
    2,889.65x = 10,403,958.66
  5. Step 5: Solve for x
    x = 10,403,958.66/2,889.65
  6. Step 6: Final answer
    x = 3,600.42

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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.