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Finding the Fourth Proportional to 9,119.70, 13,708.35 and 8,601.30

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Solution

The fourth proportional to 9,119.70, 13,708.35 and 8,601.30 is: 12,929.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,119.70 : 13,708.35 = 8,601.30 : x
  2. Step 2: Convert to fraction form
    9,119.70/13,708.35 = 8,601.30/x
  3. Step 3: Cross multiply
    9,119.70x = 13,708.35 × 8,601.30
  4. Step 4: Simplify right side
    9,119.70x = 117,909,630.86
  5. Step 5: Solve for x
    x = 117,909,630.86/9,119.70
  6. Step 6: Final answer
    x = 12,929.11

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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.