Home / 3,111.36-4,294.32-1,933.20

Finding the Fourth Proportional to 3,111.36, 4,294.32 and 1,933.20

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Solution

The fourth proportional to 3,111.36, 4,294.32 and 1,933.20 is: 2,668.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,111.36 : 4,294.32 = 1,933.20 : x
  2. Step 2: Convert to fraction form
    3,111.36/4,294.32 = 1,933.20/x
  3. Step 3: Cross multiply
    3,111.36x = 4,294.32 × 1,933.20
  4. Step 4: Simplify right side
    3,111.36x = 8,301,779.42
  5. Step 5: Solve for x
    x = 8,301,779.42/3,111.36
  6. Step 6: Final answer
    x = 2,668.22

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Half scale
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Double scale
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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.