Home / 2,157.60-3,236.51-923.77

Finding the Fourth Proportional to 2,157.60, 3,236.51 and 923.77

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Solution

The fourth proportional to 2,157.60, 3,236.51 and 923.77 is: 1,385.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,157.60 : 3,236.51 = 923.77 : x
  2. Step 2: Convert to fraction form
    2,157.60/3,236.51 = 923.77/x
  3. Step 3: Cross multiply
    2,157.60x = 3,236.51 × 923.77
  4. Step 4: Simplify right side
    2,157.60x = 2,989,790.84
  5. Step 5: Solve for x
    x = 2,989,790.84/2,157.60
  6. Step 6: Final answer
    x = 1,385.70

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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.