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Finding the Fourth Proportional to 2,871, 4,305.88 and 923.36

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Solution

The fourth proportional to 2,871, 4,305.88 and 923.36 is: 1,384.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,871 : 4,305.88 = 923.36 : x
  2. Step 2: Convert to fraction form
    2,871/4,305.88 = 923.36/x
  3. Step 3: Cross multiply
    2,871x = 4,305.88 × 923.36
  4. Step 4: Simplify right side
    2,871x = 3,975,877.36
  5. Step 5: Solve for x
    x = 3,975,877.36/2,871
  6. Step 6: Final answer
    x = 1,384.84

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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.