Home / 3,558.56-4,911.30-1,986.75

Finding the Fourth Proportional to 3,558.56, 4,911.30 and 1,986.75

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Solution

The fourth proportional to 3,558.56, 4,911.30 and 1,986.75 is: 2,741.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,558.56 : 4,911.30 = 1,986.75 : x
  2. Step 2: Convert to fraction form
    3,558.56/4,911.30 = 1,986.75/x
  3. Step 3: Cross multiply
    3,558.56x = 4,911.30 × 1,986.75
  4. Step 4: Simplify right side
    3,558.56x = 9,757,525.28
  5. Step 5: Solve for x
    x = 9,757,525.28/3,558.56
  6. Step 6: Final answer
    x = 2,741.99

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Find fourth proportional to 1,779.28, 2,455.65 and 993.38
Half scale
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Double scale
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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.