Home / 1,984.39-2,738.54-1,100.20

Finding the Fourth Proportional to 1,984.39, 2,738.54 and 1,100.20

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Solution

The fourth proportional to 1,984.39, 2,738.54 and 1,100.20 is: 1,518.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,984.39 : 2,738.54 = 1,100.20 : x
  2. Step 2: Convert to fraction form
    1,984.39/2,738.54 = 1,100.20/x
  3. Step 3: Cross multiply
    1,984.39x = 2,738.54 × 1,100.20
  4. Step 4: Simplify right side
    1,984.39x = 3,012,941.71
  5. Step 5: Solve for x
    x = 3,012,941.71/1,984.39
  6. Step 6: Final answer
    x = 1,518.32

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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.