Home / 6,345.78-9,516.44-1,902.12

Finding the Fourth Proportional to 6,345.78, 9,516.44 and 1,902.12

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Solution

The fourth proportional to 6,345.78, 9,516.44 and 1,902.12 is: 2,852.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,345.78 : 9,516.44 = 1,902.12 : x
  2. Step 2: Convert to fraction form
    6,345.78/9,516.44 = 1,902.12/x
  3. Step 3: Cross multiply
    6,345.78x = 9,516.44 × 1,902.12
  4. Step 4: Simplify right side
    6,345.78x = 18,101,410.85
  5. Step 5: Solve for x
    x = 18,101,410.85/6,345.78
  6. Step 6: Final answer
    x = 2,852.51

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Half scale
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Double scale
Find fourth proportional to 6,346.78, 9,517.94 and 1,903.12
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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.