Home / 5,419.28-8,133.24-2,133.20

Finding the Fourth Proportional to 5,419.28, 8,133.24 and 2,133.20

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Solution

The fourth proportional to 5,419.28, 8,133.24 and 2,133.20 is: 3,201.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,419.28 : 8,133.24 = 2,133.20 : x
  2. Step 2: Convert to fraction form
    5,419.28/8,133.24 = 2,133.20/x
  3. Step 3: Cross multiply
    5,419.28x = 8,133.24 × 2,133.20
  4. Step 4: Simplify right side
    5,419.28x = 17,349,827.57
  5. Step 5: Solve for x
    x = 17,349,827.57/5,419.28
  6. Step 6: Final answer
    x = 3,201.50

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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.