Home / 7,977.89-11,008.78-4,620.65

Finding the Fourth Proportional to 7,977.89, 11,008.78 and 4,620.65

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Solution

The fourth proportional to 7,977.89, 11,008.78 and 4,620.65 is: 6,376.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,977.89 : 11,008.78 = 4,620.65 : x
  2. Step 2: Convert to fraction form
    7,977.89/11,008.78 = 4,620.65/x
  3. Step 3: Cross multiply
    7,977.89x = 11,008.78 × 4,620.65
  4. Step 4: Simplify right side
    7,977.89x = 50,867,652.71
  5. Step 5: Solve for x
    x = 50,867,652.71/7,977.89
  6. Step 6: Final answer
    x = 6,376.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.