Home / 5,419.28-8,128.92-2,816.84

Finding the Fourth Proportional to 5,419.28, 8,128.92 and 2,816.84

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Solution

The fourth proportional to 5,419.28, 8,128.92 and 2,816.84 is: 4,225.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,419.28 : 8,128.92 = 2,816.84 : x
  2. Step 2: Convert to fraction form
    5,419.28/8,128.92 = 2,816.84/x
  3. Step 3: Cross multiply
    5,419.28x = 8,128.92 × 2,816.84
  4. Step 4: Simplify right side
    5,419.28x = 22,897,867.01
  5. Step 5: Solve for x
    x = 22,897,867.01/5,419.28
  6. Step 6: Final answer
    x = 4,225.26

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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.