Home / 1,985.33-2,739.88-1,146.19

Finding the Fourth Proportional to 1,985.33, 2,739.88 and 1,146.19

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Solution

The fourth proportional to 1,985.33, 2,739.88 and 1,146.19 is: 1,581.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985.33 : 2,739.88 = 1,146.19 : x
  2. Step 2: Convert to fraction form
    1,985.33/2,739.88 = 1,146.19/x
  3. Step 3: Cross multiply
    1,985.33x = 2,739.88 × 1,146.19
  4. Step 4: Simplify right side
    1,985.33x = 3,140,425.92
  5. Step 5: Solve for x
    x = 3,140,425.92/1,985.33
  6. Step 6: Final answer
    x = 1,581.81

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Half scale
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Double scale
Find fourth proportional to 1,986.33, 2,741.26 and 1,147.19
Similar ratio
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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.