Home / 3,750.77-5,176.34-2,157.90

Finding the Fourth Proportional to 3,750.77, 5,176.34 and 2,157.90

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Solution

The fourth proportional to 3,750.77, 5,176.34 and 2,157.90 is: 2,978.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,750.77 : 5,176.34 = 2,157.90 : x
  2. Step 2: Convert to fraction form
    3,750.77/5,176.34 = 2,157.90/x
  3. Step 3: Cross multiply
    3,750.77x = 5,176.34 × 2,157.90
  4. Step 4: Simplify right side
    3,750.77x = 11,170,024.09
  5. Step 5: Solve for x
    x = 11,170,024.09/3,750.77
  6. Step 6: Final answer
    x = 2,978.06

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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.