Home / 1,950.79-2,926.20-780.89

Finding the Fourth Proportional to 1,950.79, 2,926.20 and 780.89

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Solution

The fourth proportional to 1,950.79, 2,926.20 and 780.89 is: 1,171.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,950.79 : 2,926.20 = 780.89 : x
  2. Step 2: Convert to fraction form
    1,950.79/2,926.20 = 780.89/x
  3. Step 3: Cross multiply
    1,950.79x = 2,926.20 × 780.89
  4. Step 4: Simplify right side
    1,950.79x = 2,285,040.32
  5. Step 5: Solve for x
    x = 2,285,040.32/1,950.79
  6. Step 6: Final answer
    x = 1,171.34

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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.