Home / 5,186.50-7,157.45-2,828.70

Finding the Fourth Proportional to 5,186.50, 7,157.45 and 2,828.70

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Solution

The fourth proportional to 5,186.50, 7,157.45 and 2,828.70 is: 3,903.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,186.50 : 7,157.45 = 2,828.70 : x
  2. Step 2: Convert to fraction form
    5,186.50/7,157.45 = 2,828.70/x
  3. Step 3: Cross multiply
    5,186.50x = 7,157.45 × 2,828.70
  4. Step 4: Simplify right side
    5,186.50x = 20,246,278.82
  5. Step 5: Solve for x
    x = 20,246,278.82/5,186.50
  6. Step 6: Final answer
    x = 3,903.65

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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.