Home / 2,114.87-2,918.70-1,230.61

Finding the Fourth Proportional to 2,114.87, 2,918.70 and 1,230.61

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Solution

The fourth proportional to 2,114.87, 2,918.70 and 1,230.61 is: 1,698.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,114.87 : 2,918.70 = 1,230.61 : x
  2. Step 2: Convert to fraction form
    2,114.87/2,918.70 = 1,230.61/x
  3. Step 3: Cross multiply
    2,114.87x = 2,918.70 × 1,230.61
  4. Step 4: Simplify right side
    2,114.87x = 3,591,781.41
  5. Step 5: Solve for x
    x = 3,591,781.41/2,114.87
  6. Step 6: Final answer
    x = 1,698.35

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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.