Home / 3,120.36-4,681.38-1,822.68

Finding the Fourth Proportional to 3,120.36, 4,681.38 and 1,822.68

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Solution

The fourth proportional to 3,120.36, 4,681.38 and 1,822.68 is: 2,734.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.36 : 4,681.38 = 1,822.68 : x
  2. Step 2: Convert to fraction form
    3,120.36/4,681.38 = 1,822.68/x
  3. Step 3: Cross multiply
    3,120.36x = 4,681.38 × 1,822.68
  4. Step 4: Simplify right side
    3,120.36x = 8,532,657.70
  5. Step 5: Solve for x
    x = 8,532,657.70/3,120.36
  6. Step 6: Final answer
    x = 2,734.51

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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.