Home / 4,660.72-6,429.64-2,981.28

Finding the Fourth Proportional to 4,660.72, 6,429.64 and 2,981.28

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Solution

The fourth proportional to 4,660.72, 6,429.64 and 2,981.28 is: 4,112.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,660.72 : 6,429.64 = 2,981.28 : x
  2. Step 2: Convert to fraction form
    4,660.72/6,429.64 = 2,981.28/x
  3. Step 3: Cross multiply
    4,660.72x = 6,429.64 × 2,981.28
  4. Step 4: Simplify right side
    4,660.72x = 19,168,557.14
  5. Step 5: Solve for x
    x = 19,168,557.14/4,660.72
  6. Step 6: Final answer
    x = 4,112.79

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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.