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Finding the Fourth Proportional to 1,828.13, 2,742.69 and 658.27

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Solution

The fourth proportional to 1,828.13, 2,742.69 and 658.27 is: 987.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,828.13 : 2,742.69 = 658.27 : x
  2. Step 2: Convert to fraction form
    1,828.13/2,742.69 = 658.27/x
  3. Step 3: Cross multiply
    1,828.13x = 2,742.69 × 658.27
  4. Step 4: Simplify right side
    1,828.13x = 1,805,417.31
  5. Step 5: Solve for x
    x = 1,805,417.31/1,828.13
  6. Step 6: Final answer
    x = 987.58

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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.