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Finding the Fourth Proportional to 9,371.77, 12,900.13 and 8,486.03

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Solution

The fourth proportional to 9,371.77, 12,900.13 and 8,486.03 is: 11,680.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,371.77 : 12,900.13 = 8,486.03 : x
  2. Step 2: Convert to fraction form
    9,371.77/12,900.13 = 8,486.03/x
  3. Step 3: Cross multiply
    9,371.77x = 12,900.13 × 8,486.03
  4. Step 4: Simplify right side
    9,371.77x = 109,470,901.22
  5. Step 5: Solve for x
    x = 109,470,901.22/9,371.77
  6. Step 6: Final answer
    x = 11,680.92

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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.