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Finding the Fourth Proportional to 9,104.40, 12,538.80 and 7,004.88

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Solution

The fourth proportional to 9,104.40, 12,538.80 and 7,004.88 is: 9,647.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,104.40 : 12,538.80 = 7,004.88 : x
  2. Step 2: Convert to fraction form
    9,104.40/12,538.80 = 7,004.88/x
  3. Step 3: Cross multiply
    9,104.40x = 12,538.80 × 7,004.88
  4. Step 4: Simplify right side
    9,104.40x = 87,832,789.34
  5. Step 5: Solve for x
    x = 87,832,789.34/9,104.40
  6. Step 6: Final answer
    x = 9,647.29

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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.