Home / 1,615.68-2,423.66-691.27

Finding the Fourth Proportional to 1,615.68, 2,423.66 and 691.27

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Solution

The fourth proportional to 1,615.68, 2,423.66 and 691.27 is: 1,036.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,615.68 : 2,423.66 = 691.27 : x
  2. Step 2: Convert to fraction form
    1,615.68/2,423.66 = 691.27/x
  3. Step 3: Cross multiply
    1,615.68x = 2,423.66 × 691.27
  4. Step 4: Simplify right side
    1,615.68x = 1,675,403.45
  5. Step 5: Solve for x
    x = 1,675,403.45/1,615.68
  6. Step 6: Final answer
    x = 1,036.96

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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.