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Finding the Fourth Proportional to 2,976.32, 4,466.64 and 1,680.32

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Solution

The fourth proportional to 2,976.32, 4,466.64 and 1,680.32 is: 2,521.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,976.32 : 4,466.64 = 1,680.32 : x
  2. Step 2: Convert to fraction form
    2,976.32/4,466.64 = 1,680.32/x
  3. Step 3: Cross multiply
    2,976.32x = 4,466.64 × 1,680.32
  4. Step 4: Simplify right side
    2,976.32x = 7,505,384.52
  5. Step 5: Solve for x
    x = 7,505,384.52/2,976.32
  6. Step 6: Final answer
    x = 2,521.70

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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.