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Finding the Fourth Proportional to 1,668.63, 2,300.26 and 1,313.42

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Solution

The fourth proportional to 1,668.63, 2,300.26 and 1,313.42 is: 1,810.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,668.63 : 2,300.26 = 1,313.42 : x
  2. Step 2: Convert to fraction form
    1,668.63/2,300.26 = 1,313.42/x
  3. Step 3: Cross multiply
    1,668.63x = 2,300.26 × 1,313.42
  4. Step 4: Simplify right side
    1,668.63x = 3,021,199.36
  5. Step 5: Solve for x
    x = 3,021,199.36/1,668.63
  6. Step 6: Final answer
    x = 1,810.58

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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.