Home / 7,870.37-11,805.78-2,939.03

Finding the Fourth Proportional to 7,870.37, 11,805.78 and 2,939.03

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Solution

The fourth proportional to 7,870.37, 11,805.78 and 2,939.03 is: 4,408.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,870.37 : 11,805.78 = 2,939.03 : x
  2. Step 2: Convert to fraction form
    7,870.37/11,805.78 = 2,939.03/x
  3. Step 3: Cross multiply
    7,870.37x = 11,805.78 × 2,939.03
  4. Step 4: Simplify right side
    7,870.37x = 34,697,482.56
  5. Step 5: Solve for x
    x = 34,697,482.56/7,870.37
  6. Step 6: Final answer
    x = 4,408.62

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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.