Home / 2,790.81-4,186.58-1,147.23

Finding the Fourth Proportional to 2,790.81, 4,186.58 and 1,147.23

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Solution

The fourth proportional to 2,790.81, 4,186.58 and 1,147.23 is: 1,720.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.81 : 4,186.58 = 1,147.23 : x
  2. Step 2: Convert to fraction form
    2,790.81/4,186.58 = 1,147.23/x
  3. Step 3: Cross multiply
    2,790.81x = 4,186.58 × 1,147.23
  4. Step 4: Simplify right side
    2,790.81x = 4,802,964.44
  5. Step 5: Solve for x
    x = 4,802,964.44/2,790.81
  6. Step 6: Final answer
    x = 1,720.99

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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.