Home / 4,809.97-7,215.68-1,689.43

Finding the Fourth Proportional to 4,809.97, 7,215.68 and 1,689.43

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Solution

The fourth proportional to 4,809.97, 7,215.68 and 1,689.43 is: 2,534.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,809.97 : 7,215.68 = 1,689.43 : x
  2. Step 2: Convert to fraction form
    4,809.97/7,215.68 = 1,689.43/x
  3. Step 3: Cross multiply
    4,809.97x = 7,215.68 × 1,689.43
  4. Step 4: Simplify right side
    4,809.97x = 12,190,362.80
  5. Step 5: Solve for x
    x = 12,190,362.80/4,809.97
  6. Step 6: Final answer
    x = 2,534.39

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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.