Home / 8,939.63-12,331.56-5,576.60

Finding the Fourth Proportional to 8,939.63, 12,331.56 and 5,576.60

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Solution

The fourth proportional to 8,939.63, 12,331.56 and 5,576.60 is: 7,692.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,939.63 : 12,331.56 = 5,576.60 : x
  2. Step 2: Convert to fraction form
    8,939.63/12,331.56 = 5,576.60/x
  3. Step 3: Cross multiply
    8,939.63x = 12,331.56 × 5,576.60
  4. Step 4: Simplify right side
    8,939.63x = 68,768,177.50
  5. Step 5: Solve for x
    x = 68,768,177.50/8,939.63
  6. Step 6: Final answer
    x = 7,692.51

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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.