Home / 5,175.99-7,142.64-2,818.08

Finding the Fourth Proportional to 5,175.99, 7,142.64 and 2,818.08

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Solution

The fourth proportional to 5,175.99, 7,142.64 and 2,818.08 is: 3,888.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,175.99 : 7,142.64 = 2,818.08 : x
  2. Step 2: Convert to fraction form
    5,175.99/7,142.64 = 2,818.08/x
  3. Step 3: Cross multiply
    5,175.99x = 7,142.64 × 2,818.08
  4. Step 4: Simplify right side
    5,175.99x = 20,128,530.93
  5. Step 5: Solve for x
    x = 20,128,530.93/5,175.99
  6. Step 6: Final answer
    x = 3,888.83

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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.