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Finding the Fourth Proportional to 3,507.76, 4,840.50 and 1,935.85

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Solution

The fourth proportional to 3,507.76, 4,840.50 and 1,935.85 is: 2,671.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,507.76 : 4,840.50 = 1,935.85 : x
  2. Step 2: Convert to fraction form
    3,507.76/4,840.50 = 1,935.85/x
  3. Step 3: Cross multiply
    3,507.76x = 4,840.50 × 1,935.85
  4. Step 4: Simplify right side
    3,507.76x = 9,370,452.88
  5. Step 5: Solve for x
    x = 9,370,452.88/3,507.76
  6. Step 6: Final answer
    x = 2,671.35

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Half scale
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Double scale
Find fourth proportional to 3,508.76, 4,841.88 and 1,936.85
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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.