Home / 1,913.49-2,640.53-1,074.09

Finding the Fourth Proportional to 1,913.49, 2,640.53 and 1,074.09

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Solution

The fourth proportional to 1,913.49, 2,640.53 and 1,074.09 is: 1,482.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913.49 : 2,640.53 = 1,074.09 : x
  2. Step 2: Convert to fraction form
    1,913.49/2,640.53 = 1,074.09/x
  3. Step 3: Cross multiply
    1,913.49x = 2,640.53 × 1,074.09
  4. Step 4: Simplify right side
    1,913.49x = 2,836,161.50
  5. Step 5: Solve for x
    x = 2,836,161.50/1,913.49
  6. Step 6: Final answer
    x = 1,482.19

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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.