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Finding the Fourth Proportional to 3,098.66, 4,647.99 and 2,178.33

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Solution

The fourth proportional to 3,098.66, 4,647.99 and 2,178.33 is: 3,267.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,098.66 : 4,647.99 = 2,178.33 : x
  2. Step 2: Convert to fraction form
    3,098.66/4,647.99 = 2,178.33/x
  3. Step 3: Cross multiply
    3,098.66x = 4,647.99 × 2,178.33
  4. Step 4: Simplify right side
    3,098.66x = 10,124,856.06
  5. Step 5: Solve for x
    x = 10,124,856.06/3,098.66
  6. Step 6: Final answer
    x = 3,267.50

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.