Home / 1,984.88-2,739.04-1,145.75

Finding the Fourth Proportional to 1,984.88, 2,739.04 and 1,145.75

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Solution

The fourth proportional to 1,984.88, 2,739.04 and 1,145.75 is: 1,581.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,984.88 : 2,739.04 = 1,145.75 : x
  2. Step 2: Convert to fraction form
    1,984.88/2,739.04 = 1,145.75/x
  3. Step 3: Cross multiply
    1,984.88x = 2,739.04 × 1,145.75
  4. Step 4: Simplify right side
    1,984.88x = 3,138,238.52
  5. Step 5: Solve for x
    x = 3,138,238.52/1,984.88
  6. Step 6: Final answer
    x = 1,581.07

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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.