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Finding the Fourth Proportional to 6,511.90, 8,986.41 and 3,527.81

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Solution

The fourth proportional to 6,511.90, 8,986.41 and 3,527.81 is: 4,868.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,511.90 : 8,986.41 = 3,527.81 : x
  2. Step 2: Convert to fraction form
    6,511.90/8,986.41 = 3,527.81/x
  3. Step 3: Cross multiply
    6,511.90x = 8,986.41 × 3,527.81
  4. Step 4: Simplify right side
    6,511.90x = 31,702,335.83
  5. Step 5: Solve for x
    x = 31,702,335.83/6,511.90
  6. Step 6: Final answer
    x = 4,868.37

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1.5x scale

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.