Home / 8,939.81-12,336.98-4,961.50

Finding the Fourth Proportional to 8,939.81, 12,336.98 and 4,961.50

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Solution

The fourth proportional to 8,939.81, 12,336.98 and 4,961.50 is: 6,846.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,939.81 : 12,336.98 = 4,961.50 : x
  2. Step 2: Convert to fraction form
    8,939.81/12,336.98 = 4,961.50/x
  3. Step 3: Cross multiply
    8,939.81x = 12,336.98 × 4,961.50
  4. Step 4: Simplify right side
    8,939.81x = 61,209,870.62
  5. Step 5: Solve for x
    x = 61,209,870.62/8,939.81
  6. Step 6: Final answer
    x = 6,846.89

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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.