Home / 2,114.68-2,918.45-1,230.77

Finding the Fourth Proportional to 2,114.68, 2,918.45 and 1,230.77

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Solution

The fourth proportional to 2,114.68, 2,918.45 and 1,230.77 is: 1,698.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,114.68 : 2,918.45 = 1,230.77 : x
  2. Step 2: Convert to fraction form
    2,114.68/2,918.45 = 1,230.77/x
  3. Step 3: Cross multiply
    2,114.68x = 2,918.45 × 1,230.77
  4. Step 4: Simplify right side
    2,114.68x = 3,591,940.71
  5. Step 5: Solve for x
    x = 3,591,940.71/2,114.68
  6. Step 6: Final answer
    x = 1,698.57

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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.