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Finding the Fourth Proportional to 1,653.69, 2,274.84 and 1,383.06

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Solution

The fourth proportional to 1,653.69, 2,274.84 and 1,383.06 is: 1,902.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,653.69 : 2,274.84 = 1,383.06 : x
  2. Step 2: Convert to fraction form
    1,653.69/2,274.84 = 1,383.06/x
  3. Step 3: Cross multiply
    1,653.69x = 2,274.84 × 1,383.06
  4. Step 4: Simplify right side
    1,653.69x = 3,146,240.21
  5. Step 5: Solve for x
    x = 3,146,240.21/1,653.69
  6. Step 6: Final answer
    x = 1,902.56

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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.