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Finding the Fourth Proportional to 6,885.72, 9,505.20 and 4,650.63

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Solution

The fourth proportional to 6,885.72, 9,505.20 and 4,650.63 is: 6,419.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,885.72 : 9,505.20 = 4,650.63 : x
  2. Step 2: Convert to fraction form
    6,885.72/9,505.20 = 4,650.63/x
  3. Step 3: Cross multiply
    6,885.72x = 9,505.20 × 4,650.63
  4. Step 4: Simplify right side
    6,885.72x = 44,205,150.07
  5. Step 5: Solve for x
    x = 44,205,150.07/6,885.72
  6. Step 6: Final answer
    x = 6,419.83

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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.