Home / 1,905.66-2,629.38-1,206.63

Finding the Fourth Proportional to 1,905.66, 2,629.38 and 1,206.63

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Solution

The fourth proportional to 1,905.66, 2,629.38 and 1,206.63 is: 1,664.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905.66 : 2,629.38 = 1,206.63 : x
  2. Step 2: Convert to fraction form
    1,905.66/2,629.38 = 1,206.63/x
  3. Step 3: Cross multiply
    1,905.66x = 2,629.38 × 1,206.63
  4. Step 4: Simplify right side
    1,905.66x = 3,172,688.79
  5. Step 5: Solve for x
    x = 3,172,688.79/1,905.66
  6. Step 6: Final answer
    x = 1,664.88

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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.