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Finding the Fourth Proportional to 8,983.86, 13,396.65 and 8,360.57

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Solution

The fourth proportional to 8,983.86, 13,396.65 and 8,360.57 is: 12,467.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,983.86 : 13,396.65 = 8,360.57 : x
  2. Step 2: Convert to fraction form
    8,983.86/13,396.65 = 8,360.57/x
  3. Step 3: Cross multiply
    8,983.86x = 13,396.65 × 8,360.57
  4. Step 4: Simplify right side
    8,983.86x = 112,003,563.11
  5. Step 5: Solve for x
    x = 112,003,563.11/8,983.86
  6. Step 6: Final answer
    x = 12,467.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.