Home / 1,913.66-2,640.38-1,074.39

Finding the Fourth Proportional to 1,913.66, 2,640.38 and 1,074.39

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Solution

The fourth proportional to 1,913.66, 2,640.38 and 1,074.39 is: 1,482.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913.66 : 2,640.38 = 1,074.39 : x
  2. Step 2: Convert to fraction form
    1,913.66/2,640.38 = 1,074.39/x
  3. Step 3: Cross multiply
    1,913.66x = 2,640.38 × 1,074.39
  4. Step 4: Simplify right side
    1,913.66x = 2,836,792.50
  5. Step 5: Solve for x
    x = 2,836,792.50/1,913.66
  6. Step 6: Final answer
    x = 1,482.39

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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.