Home / 2,114.28-2,917.70-1,230.60

Finding the Fourth Proportional to 2,114.28, 2,917.70 and 1,230.60

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Solution

The fourth proportional to 2,114.28, 2,917.70 and 1,230.60 is: 1,698.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,114.28 : 2,917.70 = 1,230.60 : x
  2. Step 2: Convert to fraction form
    2,114.28/2,917.70 = 1,230.60/x
  3. Step 3: Cross multiply
    2,114.28x = 2,917.70 × 1,230.60
  4. Step 4: Simplify right side
    2,114.28x = 3,590,521.62
  5. Step 5: Solve for x
    x = 3,590,521.62/2,114.28
  6. Step 6: Final answer
    x = 1,698.22

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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.