Home / 5,685.51-7,845.91-3,167.80

Finding the Fourth Proportional to 5,685.51, 7,845.91 and 3,167.80

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Solution

The fourth proportional to 5,685.51, 7,845.91 and 3,167.80 is: 4,371.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,685.51 : 7,845.91 = 3,167.80 : x
  2. Step 2: Convert to fraction form
    5,685.51/7,845.91 = 3,167.80/x
  3. Step 3: Cross multiply
    5,685.51x = 7,845.91 × 3,167.80
  4. Step 4: Simplify right side
    5,685.51x = 24,854,273.70
  5. Step 5: Solve for x
    x = 24,854,273.70/5,685.51
  6. Step 6: Final answer
    x = 4,371.51

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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.