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Finding the Fourth Proportional to 8,505.89, 11,737.60 and 4,728.99

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Solution

The fourth proportional to 8,505.89, 11,737.60 and 4,728.99 is: 6,525.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,505.89 : 11,737.60 = 4,728.99 : x
  2. Step 2: Convert to fraction form
    8,505.89/11,737.60 = 4,728.99/x
  3. Step 3: Cross multiply
    8,505.89x = 11,737.60 × 4,728.99
  4. Step 4: Simplify right side
    8,505.89x = 55,506,985.56
  5. Step 5: Solve for x
    x = 55,506,985.56/8,505.89
  6. Step 6: Final answer
    x = 6,525.71

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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.