Home / 3,720.50-5,134.48-2,127.30

Finding the Fourth Proportional to 3,720.50, 5,134.48 and 2,127.30

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Solution

The fourth proportional to 3,720.50, 5,134.48 and 2,127.30 is: 2,935.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.50 : 5,134.48 = 2,127.30 : x
  2. Step 2: Convert to fraction form
    3,720.50/5,134.48 = 2,127.30/x
  3. Step 3: Cross multiply
    3,720.50x = 5,134.48 × 2,127.30
  4. Step 4: Simplify right side
    3,720.50x = 10,922,579.30
  5. Step 5: Solve for x
    x = 10,922,579.30/3,720.50
  6. Step 6: Final answer
    x = 2,935.78

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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.