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Finding the Fourth Proportional to 3,076.98, 4,614.98 and 885.21

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Solution

The fourth proportional to 3,076.98, 4,614.98 and 885.21 is: 1,327.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,076.98 : 4,614.98 = 885.21 : x
  2. Step 2: Convert to fraction form
    3,076.98/4,614.98 = 885.21/x
  3. Step 3: Cross multiply
    3,076.98x = 4,614.98 × 885.21
  4. Step 4: Simplify right side
    3,076.98x = 4,085,226.45
  5. Step 5: Solve for x
    x = 4,085,226.45/3,076.98
  6. Step 6: Final answer
    x = 1,327.67

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1.5x scale

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.