Home / 2,102.05-3,153.23-1,638.93

Finding the Fourth Proportional to 2,102.05, 3,153.23 and 1,638.93

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Solution

The fourth proportional to 2,102.05, 3,153.23 and 1,638.93 is: 2,458.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,102.05 : 3,153.23 = 1,638.93 : x
  2. Step 2: Convert to fraction form
    2,102.05/3,153.23 = 1,638.93/x
  3. Step 3: Cross multiply
    2,102.05x = 3,153.23 × 1,638.93
  4. Step 4: Simplify right side
    2,102.05x = 5,167,933.02
  5. Step 5: Solve for x
    x = 5,167,933.02/2,102.05
  6. Step 6: Final answer
    x = 2,458.52

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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.