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Finding the Fourth Proportional to 6,699.90, 9,245.87 and 3,715.77

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Solution

The fourth proportional to 6,699.90, 9,245.87 and 3,715.77 is: 5,127.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,699.90 : 9,245.87 = 3,715.77 : x
  2. Step 2: Convert to fraction form
    6,699.90/9,245.87 = 3,715.77/x
  3. Step 3: Cross multiply
    6,699.90x = 9,245.87 × 3,715.77
  4. Step 4: Simplify right side
    6,699.90x = 34,355,507.79
  5. Step 5: Solve for x
    x = 34,355,507.79/6,699.90
  6. Step 6: Final answer
    x = 5,127.76

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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.