Home / 5,320.39-7,980.58-3,212.44

Finding the Fourth Proportional to 5,320.39, 7,980.58 and 3,212.44

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Solution

The fourth proportional to 5,320.39, 7,980.58 and 3,212.44 is: 4,818.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,320.39 : 7,980.58 = 3,212.44 : x
  2. Step 2: Convert to fraction form
    5,320.39/7,980.58 = 3,212.44/x
  3. Step 3: Cross multiply
    5,320.39x = 7,980.58 × 3,212.44
  4. Step 4: Simplify right side
    5,320.39x = 25,637,078.45
  5. Step 5: Solve for x
    x = 25,637,078.45/5,320.39
  6. Step 6: Final answer
    x = 4,818.65

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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.