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Finding the Fourth Proportional to 3,210.78, 4,816.17 and 1,650.54

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Solution

The fourth proportional to 3,210.78, 4,816.17 and 1,650.54 is: 2,475.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,210.78 : 4,816.17 = 1,650.54 : x
  2. Step 2: Convert to fraction form
    3,210.78/4,816.17 = 1,650.54/x
  3. Step 3: Cross multiply
    3,210.78x = 4,816.17 × 1,650.54
  4. Step 4: Simplify right side
    3,210.78x = 7,949,281.23
  5. Step 5: Solve for x
    x = 7,949,281.23/3,210.78
  6. Step 6: Final answer
    x = 2,475.81

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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.