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Finding the Fourth Proportional to 8,977.56, 12,389.22 and 4,998.93

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Solution

The fourth proportional to 8,977.56, 12,389.22 and 4,998.93 is: 6,898.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,977.56 : 12,389.22 = 4,998.93 : x
  2. Step 2: Convert to fraction form
    8,977.56/12,389.22 = 4,998.93/x
  3. Step 3: Cross multiply
    8,977.56x = 12,389.22 × 4,998.93
  4. Step 4: Simplify right side
    8,977.56x = 61,932,843.53
  5. Step 5: Solve for x
    x = 61,932,843.53/8,977.56
  6. Step 6: Final answer
    x = 6,898.63

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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.