Home / 1,913.49-2,640.58-1,074.23

Finding the Fourth Proportional to 1,913.49, 2,640.58 and 1,074.23

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Solution

The fourth proportional to 1,913.49, 2,640.58 and 1,074.23 is: 1,482.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913.49 : 2,640.58 = 1,074.23 : x
  2. Step 2: Convert to fraction form
    1,913.49/2,640.58 = 1,074.23/x
  3. Step 3: Cross multiply
    1,913.49x = 2,640.58 × 1,074.23
  4. Step 4: Simplify right side
    1,913.49x = 2,836,577.05
  5. Step 5: Solve for x
    x = 2,836,577.05/1,913.49
  6. Step 6: Final answer
    x = 1,482.41

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1.5x scale

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.