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Finding the Fourth Proportional to 4,619.72, 6,928.74 and 1,332

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Solution

The fourth proportional to 4,619.72, 6,928.74 and 1,332 is: 1,997.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,619.72 : 6,928.74 = 1,332 : x
  2. Step 2: Convert to fraction form
    4,619.72/6,928.74 = 1,332/x
  3. Step 3: Cross multiply
    4,619.72x = 6,928.74 × 1,332
  4. Step 4: Simplify right side
    4,619.72x = 9,229,081.68
  5. Step 5: Solve for x
    x = 9,229,081.68/4,619.72
  6. Step 6: Final answer
    x = 1,997.76

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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.