Home / 3,536.20-4,880.82-2,139.40

Finding the Fourth Proportional to 3,536.20, 4,880.82 and 2,139.40

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Solution

The fourth proportional to 3,536.20, 4,880.82 and 2,139.40 is: 2,952.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,536.20 : 4,880.82 = 2,139.40 : x
  2. Step 2: Convert to fraction form
    3,536.20/4,880.82 = 2,139.40/x
  3. Step 3: Cross multiply
    3,536.20x = 4,880.82 × 2,139.40
  4. Step 4: Simplify right side
    3,536.20x = 10,442,026.31
  5. Step 5: Solve for x
    x = 10,442,026.31/3,536.20
  6. Step 6: Final answer
    x = 2,952.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.