Home / 2,339.61-3,228.60-1,291.65

Finding the Fourth Proportional to 2,339.61, 3,228.60 and 1,291.65

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Solution

The fourth proportional to 2,339.61, 3,228.60 and 1,291.65 is: 1,782.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,339.61 : 3,228.60 = 1,291.65 : x
  2. Step 2: Convert to fraction form
    2,339.61/3,228.60 = 1,291.65/x
  3. Step 3: Cross multiply
    2,339.61x = 3,228.60 × 1,291.65
  4. Step 4: Simplify right side
    2,339.61x = 4,170,221.19
  5. Step 5: Solve for x
    x = 4,170,221.19/2,339.61
  6. Step 6: Final answer
    x = 1,782.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.