Home / 3,719.08-5,128.92-2,877.09

Finding the Fourth Proportional to 3,719.08, 5,128.92 and 2,877.09

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Solution

The fourth proportional to 3,719.08, 5,128.92 and 2,877.09 is: 3,967.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,719.08 : 5,128.92 = 2,877.09 : x
  2. Step 2: Convert to fraction form
    3,719.08/5,128.92 = 2,877.09/x
  3. Step 3: Cross multiply
    3,719.08x = 5,128.92 × 2,877.09
  4. Step 4: Simplify right side
    3,719.08x = 14,756,364.44
  5. Step 5: Solve for x
    x = 14,756,364.44/3,719.08
  6. Step 6: Final answer
    x = 3,967.75

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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.