Home / 1,212.16-1,815.60-950.80

Finding the Fourth Proportional to 1,212.16, 1,815.60 and 950.80

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Solution

The fourth proportional to 1,212.16, 1,815.60 and 950.80 is: 1,424.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212.16 : 1,815.60 = 950.80 : x
  2. Step 2: Convert to fraction form
    1,212.16/1,815.60 = 950.80/x
  3. Step 3: Cross multiply
    1,212.16x = 1,815.60 × 950.80
  4. Step 4: Simplify right side
    1,212.16x = 1,726,272.48
  5. Step 5: Solve for x
    x = 1,726,272.48/1,212.16
  6. Step 6: Final answer
    x = 1,424.13

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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.