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Finding the Fourth Proportional to 1,836.63, 2,756.97 and 741.78

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Solution

The fourth proportional to 1,836.63, 2,756.97 and 741.78 is: 1,113.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,836.63 : 2,756.97 = 741.78 : x
  2. Step 2: Convert to fraction form
    1,836.63/2,756.97 = 741.78/x
  3. Step 3: Cross multiply
    1,836.63x = 2,756.97 × 741.78
  4. Step 4: Simplify right side
    1,836.63x = 2,045,065.21
  5. Step 5: Solve for x
    x = 2,045,065.21/1,836.63
  6. Step 6: Final answer
    x = 1,113.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.