Home / 7,005-9,666.96-3,861.36

Finding the Fourth Proportional to 7,005, 9,666.96 and 3,861.36

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Solution

The fourth proportional to 7,005, 9,666.96 and 3,861.36 is: 5,328.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,005 : 9,666.96 = 3,861.36 : x
  2. Step 2: Convert to fraction form
    7,005/9,666.96 = 3,861.36/x
  3. Step 3: Cross multiply
    7,005x = 9,666.96 × 3,861.36
  4. Step 4: Simplify right side
    7,005x = 37,327,612.67
  5. Step 5: Solve for x
    x = 37,327,612.67/7,005
  6. Step 6: Final answer
    x = 5,328.71

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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.