Home / 1,678.02-2,512.92-1,183.21

Finding the Fourth Proportional to 1,678.02, 2,512.92 and 1,183.21

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Solution

The fourth proportional to 1,678.02, 2,512.92 and 1,183.21 is: 1,771.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,678.02 : 2,512.92 = 1,183.21 : x
  2. Step 2: Convert to fraction form
    1,678.02/2,512.92 = 1,183.21/x
  3. Step 3: Cross multiply
    1,678.02x = 2,512.92 × 1,183.21
  4. Step 4: Simplify right side
    1,678.02x = 2,973,312.07
  5. Step 5: Solve for x
    x = 2,973,312.07/1,678.02
  6. Step 6: Final answer
    x = 1,771.92

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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.