Home / 2,420.16-3,629.16-1,122

Finding the Fourth Proportional to 2,420.16, 3,629.16 and 1,122

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Solution

The fourth proportional to 2,420.16, 3,629.16 and 1,122 is: 1,682.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,420.16 : 3,629.16 = 1,122 : x
  2. Step 2: Convert to fraction form
    2,420.16/3,629.16 = 1,122/x
  3. Step 3: Cross multiply
    2,420.16x = 3,629.16 × 1,122
  4. Step 4: Simplify right side
    2,420.16x = 4,071,917.52
  5. Step 5: Solve for x
    x = 4,071,917.52/2,420.16
  6. Step 6: Final answer
    x = 1,682.50

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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.