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Finding the Fourth Proportional to 3,390.84, 4,668.48 and 2,643.84

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Solution

The fourth proportional to 3,390.84, 4,668.48 and 2,643.84 is: 3,640.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.84 : 4,668.48 = 2,643.84 : x
  2. Step 2: Convert to fraction form
    3,390.84/4,668.48 = 2,643.84/x
  3. Step 3: Cross multiply
    3,390.84x = 4,668.48 × 2,643.84
  4. Step 4: Simplify right side
    3,390.84x = 12,342,714.16
  5. Step 5: Solve for x
    x = 12,342,714.16/3,390.84
  6. Step 6: Final answer
    x = 3,640.02

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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.