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Finding the Fourth Proportional to 7,840.68, 10,819.98 and 4,303.96

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Solution

The fourth proportional to 7,840.68, 10,819.98 and 4,303.96 is: 5,939.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,840.68 : 10,819.98 = 4,303.96 : x
  2. Step 2: Convert to fraction form
    7,840.68/10,819.98 = 4,303.96/x
  3. Step 3: Cross multiply
    7,840.68x = 10,819.98 × 4,303.96
  4. Step 4: Simplify right side
    7,840.68x = 46,568,761.12
  5. Step 5: Solve for x
    x = 46,568,761.12/7,840.68
  6. Step 6: Final answer
    x = 5,939.38

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Double scale
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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.