Home / 1,839.39-2,539.58-1,177.80

Finding the Fourth Proportional to 1,839.39, 2,539.58 and 1,177.80

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Solution

The fourth proportional to 1,839.39, 2,539.58 and 1,177.80 is: 1,626.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,839.39 : 2,539.58 = 1,177.80 : x
  2. Step 2: Convert to fraction form
    1,839.39/2,539.58 = 1,177.80/x
  3. Step 3: Cross multiply
    1,839.39x = 2,539.58 × 1,177.80
  4. Step 4: Simplify right side
    1,839.39x = 2,991,111.44
  5. Step 5: Solve for x
    x = 2,991,111.44/1,839.39
  6. Step 6: Final answer
    x = 1,626.14

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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.