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Finding the Fourth Proportional to 9,000.64, 12,330.94 and 8,664.01

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Solution

The fourth proportional to 9,000.64, 12,330.94 and 8,664.01 is: 11,869.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,000.64 : 12,330.94 = 8,664.01 : x
  2. Step 2: Convert to fraction form
    9,000.64/12,330.94 = 8,664.01/x
  3. Step 3: Cross multiply
    9,000.64x = 12,330.94 × 8,664.01
  4. Step 4: Simplify right side
    9,000.64x = 106,835,325.81
  5. Step 5: Solve for x
    x = 106,835,325.81/9,000.64
  6. Step 6: Final answer
    x = 11,869.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.