Home / 8,685.21-11,982.96-4,907.91

Finding the Fourth Proportional to 8,685.21, 11,982.96 and 4,907.91

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Solution

The fourth proportional to 8,685.21, 11,982.96 and 4,907.91 is: 6,771.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,685.21 : 11,982.96 = 4,907.91 : x
  2. Step 2: Convert to fraction form
    8,685.21/11,982.96 = 4,907.91/x
  3. Step 3: Cross multiply
    8,685.21x = 11,982.96 × 4,907.91
  4. Step 4: Simplify right side
    8,685.21x = 58,811,289.21
  5. Step 5: Solve for x
    x = 58,811,289.21/8,685.21
  6. Step 6: Final answer
    x = 6,771.43

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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.