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Finding the Fourth Proportional to 9,126.10, 13,701.30 and 7,279.30

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Solution

The fourth proportional to 9,126.10, 13,701.30 and 7,279.30 is: 10,928.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,126.10 : 13,701.30 = 7,279.30 : x
  2. Step 2: Convert to fraction form
    9,126.10/13,701.30 = 7,279.30/x
  3. Step 3: Cross multiply
    9,126.10x = 13,701.30 × 7,279.30
  4. Step 4: Simplify right side
    9,126.10x = 99,735,873.09
  5. Step 5: Solve for x
    x = 99,735,873.09/9,126.10
  6. Step 6: Final answer
    x = 10,928.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.