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Finding the Fourth Proportional to 1,546.28, 2,133.84 and 838.11

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Solution

The fourth proportional to 1,546.28, 2,133.84 and 838.11 is: 1,156.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,546.28 : 2,133.84 = 838.11 : x
  2. Step 2: Convert to fraction form
    1,546.28/2,133.84 = 838.11/x
  3. Step 3: Cross multiply
    1,546.28x = 2,133.84 × 838.11
  4. Step 4: Simplify right side
    1,546.28x = 1,788,384.07
  5. Step 5: Solve for x
    x = 1,788,384.07/1,546.28
  6. Step 6: Final answer
    x = 1,156.57

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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.