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Finding the Fourth Proportional to 2,430, 3,353.40 and 1,326

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Solution

The fourth proportional to 2,430, 3,353.40 and 1,326 is: 1,829.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,430 : 3,353.40 = 1,326 : x
  2. Step 2: Convert to fraction form
    2,430/3,353.40 = 1,326/x
  3. Step 3: Cross multiply
    2,430x = 3,353.40 × 1,326
  4. Step 4: Simplify right side
    2,430x = 4,446,608.40
  5. Step 5: Solve for x
    x = 4,446,608.40/2,430
  6. Step 6: Final answer
    x = 1,829.88

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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.