Home / 3,808.79-5,256.40-2,130.35

Finding the Fourth Proportional to 3,808.79, 5,256.40 and 2,130.35

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Solution

The fourth proportional to 3,808.79, 5,256.40 and 2,130.35 is: 2,940.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,808.79 : 5,256.40 = 2,130.35 : x
  2. Step 2: Convert to fraction form
    3,808.79/5,256.40 = 2,130.35/x
  3. Step 3: Cross multiply
    3,808.79x = 5,256.40 × 2,130.35
  4. Step 4: Simplify right side
    3,808.79x = 11,197,979.56
  5. Step 5: Solve for x
    x = 11,197,979.56/3,808.79
  6. Step 6: Final answer
    x = 2,940.04

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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.