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Finding the Fourth Proportional to 8,977.82, 12,389.05 and 4,999.10

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Solution

The fourth proportional to 8,977.82, 12,389.05 and 4,999.10 is: 6,898.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,977.82 : 12,389.05 = 4,999.10 : x
  2. Step 2: Convert to fraction form
    8,977.82/12,389.05 = 4,999.10/x
  3. Step 3: Cross multiply
    8,977.82x = 12,389.05 × 4,999.10
  4. Step 4: Simplify right side
    8,977.82x = 61,934,099.86
  5. Step 5: Solve for x
    x = 61,934,099.86/8,977.82
  6. Step 6: Final answer
    x = 6,898.57

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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.