Home / 5,629.85-8,443.29-1,680.17

Finding the Fourth Proportional to 5,629.85, 8,443.29 and 1,680.17

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Solution

The fourth proportional to 5,629.85, 8,443.29 and 1,680.17 is: 2,519.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,629.85 : 8,443.29 = 1,680.17 : x
  2. Step 2: Convert to fraction form
    5,629.85/8,443.29 = 1,680.17/x
  3. Step 3: Cross multiply
    5,629.85x = 8,443.29 × 1,680.17
  4. Step 4: Simplify right side
    5,629.85x = 14,186,154.16
  5. Step 5: Solve for x
    x = 14,186,154.16/5,629.85
  6. Step 6: Final answer
    x = 2,519.81

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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.