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Finding the Fourth Proportional to 6,448.18, 9,669.03 and 2,987.86

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Solution

The fourth proportional to 6,448.18, 9,669.03 and 2,987.86 is: 4,480.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,448.18 : 9,669.03 = 2,987.86 : x
  2. Step 2: Convert to fraction form
    6,448.18/9,669.03 = 2,987.86/x
  3. Step 3: Cross multiply
    6,448.18x = 9,669.03 × 2,987.86
  4. Step 4: Simplify right side
    6,448.18x = 28,889,707.98
  5. Step 5: Solve for x
    x = 28,889,707.98/6,448.18
  6. Step 6: Final answer
    x = 4,480.29

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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.