Home / 2,417.19-3,626.40-685.81

Finding the Fourth Proportional to 2,417.19, 3,626.40 and 685.81

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Solution

The fourth proportional to 2,417.19, 3,626.40 and 685.81 is: 1,028.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,417.19 : 3,626.40 = 685.81 : x
  2. Step 2: Convert to fraction form
    2,417.19/3,626.40 = 685.81/x
  3. Step 3: Cross multiply
    2,417.19x = 3,626.40 × 685.81
  4. Step 4: Simplify right side
    2,417.19x = 2,487,021.38
  5. Step 5: Solve for x
    x = 2,487,021.38/2,417.19
  6. Step 6: Final answer
    x = 1,028.89

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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.