Home / 5,175.48-7,142.18-2,817.62

Finding the Fourth Proportional to 5,175.48, 7,142.18 and 2,817.62

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Solution

The fourth proportional to 5,175.48, 7,142.18 and 2,817.62 is: 3,888.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,175.48 : 7,142.18 = 2,817.62 : x
  2. Step 2: Convert to fraction form
    5,175.48/7,142.18 = 2,817.62/x
  3. Step 3: Cross multiply
    5,175.48x = 7,142.18 × 2,817.62
  4. Step 4: Simplify right side
    5,175.48x = 20,123,899.41
  5. Step 5: Solve for x
    x = 20,123,899.41/5,175.48
  6. Step 6: Final answer
    x = 3,888.32

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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.