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Finding the Fourth Proportional to 9,405.02, 12,972.03 and 6,755.15

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Solution

The fourth proportional to 9,405.02, 12,972.03 and 6,755.15 is: 9,317.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,405.02 : 12,972.03 = 6,755.15 : x
  2. Step 2: Convert to fraction form
    9,405.02/12,972.03 = 6,755.15/x
  3. Step 3: Cross multiply
    9,405.02x = 12,972.03 × 6,755.15
  4. Step 4: Simplify right side
    9,405.02x = 87,628,008.45
  5. Step 5: Solve for x
    x = 87,628,008.45/9,405.02
  6. Step 6: Final answer
    x = 9,317.15

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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.