Home / 2,790.90-4,183.29-1,147.01

Finding the Fourth Proportional to 2,790.90, 4,183.29 and 1,147.01

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Solution

The fourth proportional to 2,790.90, 4,183.29 and 1,147.01 is: 1,719.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.90 : 4,183.29 = 1,147.01 : x
  2. Step 2: Convert to fraction form
    2,790.90/4,183.29 = 1,147.01/x
  3. Step 3: Cross multiply
    2,790.90x = 4,183.29 × 1,147.01
  4. Step 4: Simplify right side
    2,790.90x = 4,798,254.55
  5. Step 5: Solve for x
    x = 4,798,254.55/2,790.90
  6. Step 6: Final answer
    x = 1,719.25

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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.