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Finding the Fourth Proportional to 7,683.59, 11,529.63 and 7,125.90

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Solution

The fourth proportional to 7,683.59, 11,529.63 and 7,125.90 is: 10,692.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,683.59 : 11,529.63 = 7,125.90 : x
  2. Step 2: Convert to fraction form
    7,683.59/11,529.63 = 7,125.90/x
  3. Step 3: Cross multiply
    7,683.59x = 11,529.63 × 7,125.90
  4. Step 4: Simplify right side
    7,683.59x = 82,158,990.42
  5. Step 5: Solve for x
    x = 82,158,990.42/7,683.59
  6. Step 6: Final answer
    x = 10,692.79

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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.