Home / 2,780.24-4,165.73-1,956.79

Finding the Fourth Proportional to 2,780.24, 4,165.73 and 1,956.79

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Solution

The fourth proportional to 2,780.24, 4,165.73 and 1,956.79 is: 2,931.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.24 : 4,165.73 = 1,956.79 : x
  2. Step 2: Convert to fraction form
    2,780.24/4,165.73 = 1,956.79/x
  3. Step 3: Cross multiply
    2,780.24x = 4,165.73 × 1,956.79
  4. Step 4: Simplify right side
    2,780.24x = 8,151,458.81
  5. Step 5: Solve for x
    x = 8,151,458.81/2,780.24
  6. Step 6: Final answer
    x = 2,931.93

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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.