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Finding the Fourth Proportional to 3,520.73, 4,858.76 and 1,948.72

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Solution

The fourth proportional to 3,520.73, 4,858.76 and 1,948.72 is: 2,689.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,520.73 : 4,858.76 = 1,948.72 : x
  2. Step 2: Convert to fraction form
    3,520.73/4,858.76 = 1,948.72/x
  3. Step 3: Cross multiply
    3,520.73x = 4,858.76 × 1,948.72
  4. Step 4: Simplify right side
    3,520.73x = 9,468,362.79
  5. Step 5: Solve for x
    x = 9,468,362.79/3,520.73
  6. Step 6: Final answer
    x = 2,689.32

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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.