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Finding the Fourth Proportional to 10,328.74, 15,489 and 3,751.33

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Solution

The fourth proportional to 10,328.74, 15,489 and 3,751.33 is: 5,625.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,328.74 : 15,489 = 3,751.33 : x
  2. Step 2: Convert to fraction form
    10,328.74/15,489 = 3,751.33/x
  3. Step 3: Cross multiply
    10,328.74x = 15,489 × 3,751.33
  4. Step 4: Simplify right side
    10,328.74x = 58,104,350.37
  5. Step 5: Solve for x
    x = 58,104,350.37/10,328.74
  6. Step 6: Final answer
    x = 5,625.50

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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.