Home / 3,173.50-4,379.43-1,931.50

Finding the Fourth Proportional to 3,173.50, 4,379.43 and 1,931.50

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Solution

The fourth proportional to 3,173.50, 4,379.43 and 1,931.50 is: 2,665.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,173.50 : 4,379.43 = 1,931.50 : x
  2. Step 2: Convert to fraction form
    3,173.50/4,379.43 = 1,931.50/x
  3. Step 3: Cross multiply
    3,173.50x = 4,379.43 × 1,931.50
  4. Step 4: Simplify right side
    3,173.50x = 8,458,869.05
  5. Step 5: Solve for x
    x = 8,458,869.05/3,173.50
  6. Step 6: Final answer
    x = 2,665.47

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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.