Home / 5,119.68-7,678.13-2,197.30

Finding the Fourth Proportional to 5,119.68, 7,678.13 and 2,197.30

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Solution

The fourth proportional to 5,119.68, 7,678.13 and 2,197.30 is: 3,295.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,119.68 : 7,678.13 = 2,197.30 : x
  2. Step 2: Convert to fraction form
    5,119.68/7,678.13 = 2,197.30/x
  3. Step 3: Cross multiply
    5,119.68x = 7,678.13 × 2,197.30
  4. Step 4: Simplify right side
    5,119.68x = 16,871,137.23
  5. Step 5: Solve for x
    x = 16,871,137.23/5,119.68
  6. Step 6: Final answer
    x = 3,295.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.