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Finding the Fourth Proportional to 9,388.88, 12,957.64 and 7,026.88

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Solution

The fourth proportional to 9,388.88, 12,957.64 and 7,026.88 is: 9,697.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,388.88 : 12,957.64 = 7,026.88 : x
  2. Step 2: Convert to fraction form
    9,388.88/12,957.64 = 7,026.88/x
  3. Step 3: Cross multiply
    9,388.88x = 12,957.64 × 7,026.88
  4. Step 4: Simplify right side
    9,388.88x = 91,051,781.36
  5. Step 5: Solve for x
    x = 91,051,781.36/9,388.88
  6. Step 6: Final answer
    x = 9,697.83

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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.