Home / 2,156.37-3,235.66-923.45

Finding the Fourth Proportional to 2,156.37, 3,235.66 and 923.45

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Solution

The fourth proportional to 2,156.37, 3,235.66 and 923.45 is: 1,385.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,156.37 : 3,235.66 = 923.45 : x
  2. Step 2: Convert to fraction form
    2,156.37/3,235.66 = 923.45/x
  3. Step 3: Cross multiply
    2,156.37x = 3,235.66 × 923.45
  4. Step 4: Simplify right side
    2,156.37x = 2,987,970.23
  5. Step 5: Solve for x
    x = 2,987,970.23/2,156.37
  6. Step 6: Final answer
    x = 1,385.65

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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.