Home / 1,640.05-2,263.44-1,080.84

Finding the Fourth Proportional to 1,640.05, 2,263.44 and 1,080.84

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Solution

The fourth proportional to 1,640.05, 2,263.44 and 1,080.84 is: 1,491.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640.05 : 2,263.44 = 1,080.84 : x
  2. Step 2: Convert to fraction form
    1,640.05/2,263.44 = 1,080.84/x
  3. Step 3: Cross multiply
    1,640.05x = 2,263.44 × 1,080.84
  4. Step 4: Simplify right side
    1,640.05x = 2,446,429.03
  5. Step 5: Solve for x
    x = 2,446,429.03/1,640.05
  6. Step 6: Final answer
    x = 1,491.68

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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.