Home / 2,120.48-3,172.40-1,874.24

Finding the Fourth Proportional to 2,120.48, 3,172.40 and 1,874.24

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Solution

The fourth proportional to 2,120.48, 3,172.40 and 1,874.24 is: 2,804.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.48 : 3,172.40 = 1,874.24 : x
  2. Step 2: Convert to fraction form
    2,120.48/3,172.40 = 1,874.24/x
  3. Step 3: Cross multiply
    2,120.48x = 3,172.40 × 1,874.24
  4. Step 4: Simplify right side
    2,120.48x = 5,945,838.98
  5. Step 5: Solve for x
    x = 5,945,838.98/2,120.48
  6. Step 6: Final answer
    x = 2,804.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.