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Finding the Fourth Proportional to 9,355.64, 12,912.02 and 6,521.18

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Solution

The fourth proportional to 9,355.64, 12,912.02 and 6,521.18 is: 9,000.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,355.64 : 12,912.02 = 6,521.18 : x
  2. Step 2: Convert to fraction form
    9,355.64/12,912.02 = 6,521.18/x
  3. Step 3: Cross multiply
    9,355.64x = 12,912.02 × 6,521.18
  4. Step 4: Simplify right side
    9,355.64x = 84,201,606.58
  5. Step 5: Solve for x
    x = 84,201,606.58/9,355.64
  6. Step 6: Final answer
    x = 9,000.09

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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.