Home / 3,423.48-4,743.92-3,215.40

Finding the Fourth Proportional to 3,423.48, 4,743.92 and 3,215.40

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Solution

The fourth proportional to 3,423.48, 4,743.92 and 3,215.40 is: 4,455.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,423.48 : 4,743.92 = 3,215.40 : x
  2. Step 2: Convert to fraction form
    3,423.48/4,743.92 = 3,215.40/x
  3. Step 3: Cross multiply
    3,423.48x = 4,743.92 × 3,215.40
  4. Step 4: Simplify right side
    3,423.48x = 15,253,600.37
  5. Step 5: Solve for x
    x = 15,253,600.37/3,423.48
  6. Step 6: Final answer
    x = 4,455.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.