Home / 5,157.76-7,118.40-3,270.28

Finding the Fourth Proportional to 5,157.76, 7,118.40 and 3,270.28

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Solution

The fourth proportional to 5,157.76, 7,118.40 and 3,270.28 is: 4,513.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,157.76 : 7,118.40 = 3,270.28 : x
  2. Step 2: Convert to fraction form
    5,157.76/7,118.40 = 3,270.28/x
  3. Step 3: Cross multiply
    5,157.76x = 7,118.40 × 3,270.28
  4. Step 4: Simplify right side
    5,157.76x = 23,279,161.15
  5. Step 5: Solve for x
    x = 23,279,161.15/5,157.76
  6. Step 6: Final answer
    x = 4,513.42

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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.