Home / 3,400.88-5,100.24-1,320.74

Finding the Fourth Proportional to 3,400.88, 5,100.24 and 1,320.74

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Solution

The fourth proportional to 3,400.88, 5,100.24 and 1,320.74 is: 1,980.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,400.88 : 5,100.24 = 1,320.74 : x
  2. Step 2: Convert to fraction form
    3,400.88/5,100.24 = 1,320.74/x
  3. Step 3: Cross multiply
    3,400.88x = 5,100.24 × 1,320.74
  4. Step 4: Simplify right side
    3,400.88x = 6,736,090.98
  5. Step 5: Solve for x
    x = 6,736,090.98/3,400.88
  6. Step 6: Final answer
    x = 1,980.69

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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.