Home / 7,681.67-11,525.31-3,240.45

Finding the Fourth Proportional to 7,681.67, 11,525.31 and 3,240.45

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Solution

The fourth proportional to 7,681.67, 11,525.31 and 3,240.45 is: 4,861.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,681.67 : 11,525.31 = 3,240.45 : x
  2. Step 2: Convert to fraction form
    7,681.67/11,525.31 = 3,240.45/x
  3. Step 3: Cross multiply
    7,681.67x = 11,525.31 × 3,240.45
  4. Step 4: Simplify right side
    7,681.67x = 37,347,190.79
  5. Step 5: Solve for x
    x = 37,347,190.79/7,681.67
  6. Step 6: Final answer
    x = 4,861.86

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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.