Home / 7,719.78-10,653.28-4,183

Finding the Fourth Proportional to 7,719.78, 10,653.28 and 4,183

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Solution

The fourth proportional to 7,719.78, 10,653.28 and 4,183 is: 5,772.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,719.78 : 10,653.28 = 4,183 : x
  2. Step 2: Convert to fraction form
    7,719.78/10,653.28 = 4,183/x
  3. Step 3: Cross multiply
    7,719.78x = 10,653.28 × 4,183
  4. Step 4: Simplify right side
    7,719.78x = 44,562,670.24
  5. Step 5: Solve for x
    x = 44,562,670.24/7,719.78
  6. Step 6: Final answer
    x = 5,772.53

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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.