Home / 7,685.79-11,525.40-3,240.54

Finding the Fourth Proportional to 7,685.79, 11,525.40 and 3,240.54

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Solution

The fourth proportional to 7,685.79, 11,525.40 and 3,240.54 is: 4,859.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,685.79 : 11,525.40 = 3,240.54 : x
  2. Step 2: Convert to fraction form
    7,685.79/11,525.40 = 3,240.54/x
  3. Step 3: Cross multiply
    7,685.79x = 11,525.40 × 3,240.54
  4. Step 4: Simplify right side
    7,685.79x = 37,348,519.72
  5. Step 5: Solve for x
    x = 37,348,519.72/7,685.79
  6. Step 6: Final answer
    x = 4,859.42

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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.