Home / 7,780.23-11,670.21-1,936.89

Finding the Fourth Proportional to 7,780.23, 11,670.21 and 1,936.89

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Solution

The fourth proportional to 7,780.23, 11,670.21 and 1,936.89 is: 2,905.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,780.23 : 11,670.21 = 1,936.89 : x
  2. Step 2: Convert to fraction form
    7,780.23/11,670.21 = 1,936.89/x
  3. Step 3: Cross multiply
    7,780.23x = 11,670.21 × 1,936.89
  4. Step 4: Simplify right side
    7,780.23x = 22,603,913.05
  5. Step 5: Solve for x
    x = 22,603,913.05/7,780.23
  6. Step 6: Final answer
    x = 2,905.30

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1.5x scale

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.