Home / 6,514.28-8,989.68-3,719.78

Finding the Fourth Proportional to 6,514.28, 8,989.68 and 3,719.78

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Solution

The fourth proportional to 6,514.28, 8,989.68 and 3,719.78 is: 5,133.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,514.28 : 8,989.68 = 3,719.78 : x
  2. Step 2: Convert to fraction form
    6,514.28/8,989.68 = 3,719.78/x
  3. Step 3: Cross multiply
    6,514.28x = 8,989.68 × 3,719.78
  4. Step 4: Simplify right side
    6,514.28x = 33,439,631.87
  5. Step 5: Solve for x
    x = 33,439,631.87/6,514.28
  6. Step 6: Final answer
    x = 5,133.28

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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.