Home / 1,348.29-2,021.61-618.09

Finding the Fourth Proportional to 1,348.29, 2,021.61 and 618.09

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Solution

The fourth proportional to 1,348.29, 2,021.61 and 618.09 is: 926.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,348.29 : 2,021.61 = 618.09 : x
  2. Step 2: Convert to fraction form
    1,348.29/2,021.61 = 618.09/x
  3. Step 3: Cross multiply
    1,348.29x = 2,021.61 × 618.09
  4. Step 4: Simplify right side
    1,348.29x = 1,249,536.92
  5. Step 5: Solve for x
    x = 1,249,536.92/1,348.29
  6. Step 6: Final answer
    x = 926.76

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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.