Home / 6,809.90-10,209.65-3,520.89

Finding the Fourth Proportional to 6,809.90, 10,209.65 and 3,520.89

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Solution

The fourth proportional to 6,809.90, 10,209.65 and 3,520.89 is: 5,278.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,809.90 : 10,209.65 = 3,520.89 : x
  2. Step 2: Convert to fraction form
    6,809.90/10,209.65 = 3,520.89/x
  3. Step 3: Cross multiply
    6,809.90x = 10,209.65 × 3,520.89
  4. Step 4: Simplify right side
    6,809.90x = 35,947,063.39
  5. Step 5: Solve for x
    x = 35,947,063.39/6,809.90
  6. Step 6: Final answer
    x = 5,278.65

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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.