Home / 5,186.26-7,157.10-2,828.40

Finding the Fourth Proportional to 5,186.26, 7,157.10 and 2,828.40

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Solution

The fourth proportional to 5,186.26, 7,157.10 and 2,828.40 is: 3,903.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,186.26 : 7,157.10 = 2,828.40 : x
  2. Step 2: Convert to fraction form
    5,186.26/7,157.10 = 2,828.40/x
  3. Step 3: Cross multiply
    5,186.26x = 7,157.10 × 2,828.40
  4. Step 4: Simplify right side
    5,186.26x = 20,243,141.64
  5. Step 5: Solve for x
    x = 20,243,141.64/5,186.26
  6. Step 6: Final answer
    x = 3,903.23

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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.