Home / 5,429.28-8,148.24-2,143.20

Finding the Fourth Proportional to 5,429.28, 8,148.24 and 2,143.20

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Solution

The fourth proportional to 5,429.28, 8,148.24 and 2,143.20 is: 3,216.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,429.28 : 8,148.24 = 2,143.20 : x
  2. Step 2: Convert to fraction form
    5,429.28/8,148.24 = 2,143.20/x
  3. Step 3: Cross multiply
    5,429.28x = 8,148.24 × 2,143.20
  4. Step 4: Simplify right side
    5,429.28x = 17,463,307.97
  5. Step 5: Solve for x
    x = 17,463,307.97/5,429.28
  6. Step 6: Final answer
    x = 3,216.51

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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.