Home / 7,977.92-11,011.94-4,621.55

Finding the Fourth Proportional to 7,977.92, 11,011.94 and 4,621.55

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Solution

The fourth proportional to 7,977.92, 11,011.94 and 4,621.55 is: 6,379.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,977.92 : 11,011.94 = 4,621.55 : x
  2. Step 2: Convert to fraction form
    7,977.92/11,011.94 = 4,621.55/x
  3. Step 3: Cross multiply
    7,977.92x = 11,011.94 × 4,621.55
  4. Step 4: Simplify right side
    7,977.92x = 50,892,153.14
  5. Step 5: Solve for x
    x = 50,892,153.14/7,977.92
  6. Step 6: Final answer
    x = 6,379.13

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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.