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Finding the Fourth Proportional to 8,739.92, 13,089.35 and 7,599.62

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Solution

The fourth proportional to 8,739.92, 13,089.35 and 7,599.62 is: 11,381.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,739.92 : 13,089.35 = 7,599.62 : x
  2. Step 2: Convert to fraction form
    8,739.92/13,089.35 = 7,599.62/x
  3. Step 3: Cross multiply
    8,739.92x = 13,089.35 × 7,599.62
  4. Step 4: Simplify right side
    8,739.92x = 99,474,137.77
  5. Step 5: Solve for x
    x = 99,474,137.77/8,739.92
  6. Step 6: Final answer
    x = 11,381.58

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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.