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Finding the Fourth Proportional to 6,518.79, 8,995.35 and 3,865.77

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Solution

The fourth proportional to 6,518.79, 8,995.35 and 3,865.77 is: 5,334.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,518.79 : 8,995.35 = 3,865.77 : x
  2. Step 2: Convert to fraction form
    6,518.79/8,995.35 = 3,865.77/x
  3. Step 3: Cross multiply
    6,518.79x = 8,995.35 × 3,865.77
  4. Step 4: Simplify right side
    6,518.79x = 34,773,954.17
  5. Step 5: Solve for x
    x = 34,773,954.17/6,518.79
  6. Step 6: Final answer
    x = 5,334.42

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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.