Home / 3,430.20-5,137.74-2,777.88

Finding the Fourth Proportional to 3,430.20, 5,137.74 and 2,777.88

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Solution

The fourth proportional to 3,430.20, 5,137.74 and 2,777.88 is: 4,160.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,430.20 : 5,137.74 = 2,777.88 : x
  2. Step 2: Convert to fraction form
    3,430.20/5,137.74 = 2,777.88/x
  3. Step 3: Cross multiply
    3,430.20x = 5,137.74 × 2,777.88
  4. Step 4: Simplify right side
    3,430.20x = 14,272,025.19
  5. Step 5: Solve for x
    x = 14,272,025.19/3,430.20
  6. Step 6: Final answer
    x = 4,160.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.