Home / 8,939.91-12,337.21-4,961.28

Finding the Fourth Proportional to 8,939.91, 12,337.21 and 4,961.28

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Solution

The fourth proportional to 8,939.91, 12,337.21 and 4,961.28 is: 6,846.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,939.91 : 12,337.21 = 4,961.28 : x
  2. Step 2: Convert to fraction form
    8,939.91/12,337.21 = 4,961.28/x
  3. Step 3: Cross multiply
    8,939.91x = 12,337.21 × 4,961.28
  4. Step 4: Simplify right side
    8,939.91x = 61,208,353.23
  5. Step 5: Solve for x
    x = 61,208,353.23/8,939.91
  6. Step 6: Final answer
    x = 6,846.64

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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.