Home / 1,615.79-2,423.68-1,129.79

Finding the Fourth Proportional to 1,615.79, 2,423.68 and 1,129.79

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Solution

The fourth proportional to 1,615.79, 2,423.68 and 1,129.79 is: 1,694.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,615.79 : 2,423.68 = 1,129.79 : x
  2. Step 2: Convert to fraction form
    1,615.79/2,423.68 = 1,129.79/x
  3. Step 3: Cross multiply
    1,615.79x = 2,423.68 × 1,129.79
  4. Step 4: Simplify right side
    1,615.79x = 2,738,249.43
  5. Step 5: Solve for x
    x = 2,738,249.43/1,615.79
  6. Step 6: Final answer
    x = 1,694.68

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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.