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Finding the Fourth Proportional to 2,854.42, 3,939.87 and 1,675.87

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Solution

The fourth proportional to 2,854.42, 3,939.87 and 1,675.87 is: 2,313.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,854.42 : 3,939.87 = 1,675.87 : x
  2. Step 2: Convert to fraction form
    2,854.42/3,939.87 = 1,675.87/x
  3. Step 3: Cross multiply
    2,854.42x = 3,939.87 × 1,675.87
  4. Step 4: Simplify right side
    2,854.42x = 6,602,706.37
  5. Step 5: Solve for x
    x = 6,602,706.37/2,854.42
  6. Step 6: Final answer
    x = 2,313.15

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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.