Home / 4,122.65-5,686.30-2,847.02

Finding the Fourth Proportional to 4,122.65, 5,686.30 and 2,847.02

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Solution

The fourth proportional to 4,122.65, 5,686.30 and 2,847.02 is: 3,926.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,122.65 : 5,686.30 = 2,847.02 : x
  2. Step 2: Convert to fraction form
    4,122.65/5,686.30 = 2,847.02/x
  3. Step 3: Cross multiply
    4,122.65x = 5,686.30 × 2,847.02
  4. Step 4: Simplify right side
    4,122.65x = 16,188,984.95
  5. Step 5: Solve for x
    x = 16,188,984.95/4,122.65
  6. Step 6: Final answer
    x = 3,926.84

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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.