Home / 1,817.19-2,508.71-1,228.77

Finding the Fourth Proportional to 1,817.19, 2,508.71 and 1,228.77

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Solution

The fourth proportional to 1,817.19, 2,508.71 and 1,228.77 is: 1,696.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,817.19 : 2,508.71 = 1,228.77 : x
  2. Step 2: Convert to fraction form
    1,817.19/2,508.71 = 1,228.77/x
  3. Step 3: Cross multiply
    1,817.19x = 2,508.71 × 1,228.77
  4. Step 4: Simplify right side
    1,817.19x = 3,082,621.44
  5. Step 5: Solve for x
    x = 3,082,621.44/1,817.19
  6. Step 6: Final answer
    x = 1,696.37

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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.