Home / 2,872.08-4,307.16-923.76

Finding the Fourth Proportional to 2,872.08, 4,307.16 and 923.76

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Solution

The fourth proportional to 2,872.08, 4,307.16 and 923.76 is: 1,385.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,872.08 : 4,307.16 = 923.76 : x
  2. Step 2: Convert to fraction form
    2,872.08/4,307.16 = 923.76/x
  3. Step 3: Cross multiply
    2,872.08x = 4,307.16 × 923.76
  4. Step 4: Simplify right side
    2,872.08x = 3,978,782.12
  5. Step 5: Solve for x
    x = 3,978,782.12/2,872.08
  6. Step 6: Final answer
    x = 1,385.33

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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.