Home / 3,808.87-5,256.42-2,130.30

Finding the Fourth Proportional to 3,808.87, 5,256.42 and 2,130.30

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Solution

The fourth proportional to 3,808.87, 5,256.42 and 2,130.30 is: 2,939.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,808.87 : 5,256.42 = 2,130.30 : x
  2. Step 2: Convert to fraction form
    3,808.87/5,256.42 = 2,130.30/x
  3. Step 3: Cross multiply
    3,808.87x = 5,256.42 × 2,130.30
  4. Step 4: Simplify right side
    3,808.87x = 11,197,751.53
  5. Step 5: Solve for x
    x = 11,197,751.53/3,808.87
  6. Step 6: Final answer
    x = 2,939.91

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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.