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Finding the Fourth Proportional to 6,078.84, 8,389.51 and 3,390.49

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Solution

The fourth proportional to 6,078.84, 8,389.51 and 3,390.49 is: 4,679.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,078.84 : 8,389.51 = 3,390.49 : x
  2. Step 2: Convert to fraction form
    6,078.84/8,389.51 = 3,390.49/x
  3. Step 3: Cross multiply
    6,078.84x = 8,389.51 × 3,390.49
  4. Step 4: Simplify right side
    6,078.84x = 28,444,564.48
  5. Step 5: Solve for x
    x = 28,444,564.48/6,078.84
  6. Step 6: Final answer
    x = 4,679.28

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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.