Home / 8,977.85-12,389.97-4,998.85

Finding the Fourth Proportional to 8,977.85, 12,389.97 and 4,998.85

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Solution

The fourth proportional to 8,977.85, 12,389.97 and 4,998.85 is: 6,898.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,977.85 : 12,389.97 = 4,998.85 : x
  2. Step 2: Convert to fraction form
    8,977.85/12,389.97 = 4,998.85/x
  3. Step 3: Cross multiply
    8,977.85x = 12,389.97 × 4,998.85
  4. Step 4: Simplify right side
    8,977.85x = 61,935,576.54
  5. Step 5: Solve for x
    x = 61,935,576.54/8,977.85
  6. Step 6: Final answer
    x = 6,898.71

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1.5x scale

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.