Home / 7,840.56-11,760.66-1,997.13

Finding the Fourth Proportional to 7,840.56, 11,760.66 and 1,997.13

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Solution

The fourth proportional to 7,840.56, 11,760.66 and 1,997.13 is: 2,995.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,840.56 : 11,760.66 = 1,997.13 : x
  2. Step 2: Convert to fraction form
    7,840.56/11,760.66 = 1,997.13/x
  3. Step 3: Cross multiply
    7,840.56x = 11,760.66 × 1,997.13
  4. Step 4: Simplify right side
    7,840.56x = 23,487,566.91
  5. Step 5: Solve for x
    x = 23,487,566.91/7,840.56
  6. Step 6: Final answer
    x = 2,995.65

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Double scale
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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.