Home / 5,222.80-7,825.40-2,586.79

Finding the Fourth Proportional to 5,222.80, 7,825.40 and 2,586.79

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Solution

The fourth proportional to 5,222.80, 7,825.40 and 2,586.79 is: 3,875.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,222.80 : 7,825.40 = 2,586.79 : x
  2. Step 2: Convert to fraction form
    5,222.80/7,825.40 = 2,586.79/x
  3. Step 3: Cross multiply
    5,222.80x = 7,825.40 × 2,586.79
  4. Step 4: Simplify right side
    5,222.80x = 20,242,614.41
  5. Step 5: Solve for x
    x = 20,242,614.41/5,222.80
  6. Step 6: Final answer
    x = 3,875.82

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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.