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Finding the Fourth Proportional to 1,868.93, 2,800.31 and 827.37

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Solution

The fourth proportional to 1,868.93, 2,800.31 and 827.37 is: 1,239.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,868.93 : 2,800.31 = 827.37 : x
  2. Step 2: Convert to fraction form
    1,868.93/2,800.31 = 827.37/x
  3. Step 3: Cross multiply
    1,868.93x = 2,800.31 × 827.37
  4. Step 4: Simplify right side
    1,868.93x = 2,316,888.35
  5. Step 5: Solve for x
    x = 2,316,888.35/1,868.93
  6. Step 6: Final answer
    x = 1,239.69

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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.