Home / 3,809.28-5,256.41-2,130.51

Finding the Fourth Proportional to 3,809.28, 5,256.41 and 2,130.51

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Solution

The fourth proportional to 3,809.28, 5,256.41 and 2,130.51 is: 2,939.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,809.28 : 5,256.41 = 2,130.51 : x
  2. Step 2: Convert to fraction form
    3,809.28/5,256.41 = 2,130.51/x
  3. Step 3: Cross multiply
    3,809.28x = 5,256.41 × 2,130.51
  4. Step 4: Simplify right side
    3,809.28x = 11,198,823.42
  5. Step 5: Solve for x
    x = 11,198,823.42/3,809.28
  6. Step 6: Final answer
    x = 2,939.88

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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.