Home / 3,143.88-4,712.18-2,528.28

Finding the Fourth Proportional to 3,143.88, 4,712.18 and 2,528.28

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Solution

The fourth proportional to 3,143.88, 4,712.18 and 2,528.28 is: 3,789.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,143.88 : 4,712.18 = 2,528.28 : x
  2. Step 2: Convert to fraction form
    3,143.88/4,712.18 = 2,528.28/x
  3. Step 3: Cross multiply
    3,143.88x = 4,712.18 × 2,528.28
  4. Step 4: Simplify right side
    3,143.88x = 11,913,697.81
  5. Step 5: Solve for x
    x = 11,913,697.81/3,143.88
  6. Step 6: Final answer
    x = 3,789.49

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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.