Home / 2,145.05-3,214.73-1,403.70

Finding the Fourth Proportional to 2,145.05, 3,214.73 and 1,403.70

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Solution

The fourth proportional to 2,145.05, 3,214.73 and 1,403.70 is: 2,103.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,145.05 : 3,214.73 = 1,403.70 : x
  2. Step 2: Convert to fraction form
    2,145.05/3,214.73 = 1,403.70/x
  3. Step 3: Cross multiply
    2,145.05x = 3,214.73 × 1,403.70
  4. Step 4: Simplify right side
    2,145.05x = 4,512,509.48
  5. Step 5: Solve for x
    x = 4,512,509.48/2,145.05
  6. Step 6: Final answer
    x = 2,103.69

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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.