Home / 1,791.30-2,686.81-913.26

Finding the Fourth Proportional to 1,791.30, 2,686.81 and 913.26

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Solution

The fourth proportional to 1,791.30, 2,686.81 and 913.26 is: 1,369.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,791.30 : 2,686.81 = 913.26 : x
  2. Step 2: Convert to fraction form
    1,791.30/2,686.81 = 913.26/x
  3. Step 3: Cross multiply
    1,791.30x = 2,686.81 × 913.26
  4. Step 4: Simplify right side
    1,791.30x = 2,453,756.10
  5. Step 5: Solve for x
    x = 2,453,756.10/1,791.30
  6. Step 6: Final answer
    x = 1,369.82

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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.