Home / 1,984.55-2,738.96-1,145.09

Finding the Fourth Proportional to 1,984.55, 2,738.96 and 1,145.09

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Solution

The fourth proportional to 1,984.55, 2,738.96 and 1,145.09 is: 1,580.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,984.55 : 2,738.96 = 1,145.09 : x
  2. Step 2: Convert to fraction form
    1,984.55/2,738.96 = 1,145.09/x
  3. Step 3: Cross multiply
    1,984.55x = 2,738.96 × 1,145.09
  4. Step 4: Simplify right side
    1,984.55x = 3,136,336.29
  5. Step 5: Solve for x
    x = 3,136,336.29/1,984.55
  6. Step 6: Final answer
    x = 1,580.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.