Home / 3,624.40-4,999.68-2,131.60

Finding the Fourth Proportional to 3,624.40, 4,999.68 and 2,131.60

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Solution

The fourth proportional to 3,624.40, 4,999.68 and 2,131.60 is: 2,940.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,624.40 : 4,999.68 = 2,131.60 : x
  2. Step 2: Convert to fraction form
    3,624.40/4,999.68 = 2,131.60/x
  3. Step 3: Cross multiply
    3,624.40x = 4,999.68 × 2,131.60
  4. Step 4: Simplify right side
    3,624.40x = 10,657,317.89
  5. Step 5: Solve for x
    x = 10,657,317.89/3,624.40
  6. Step 6: Final answer
    x = 2,940.44

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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.