Home / 5,140.65-7,708.68-1,629.66

Finding the Fourth Proportional to 5,140.65, 7,708.68 and 1,629.66

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Solution

The fourth proportional to 5,140.65, 7,708.68 and 1,629.66 is: 2,443.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,140.65 : 7,708.68 = 1,629.66 : x
  2. Step 2: Convert to fraction form
    5,140.65/7,708.68 = 1,629.66/x
  3. Step 3: Cross multiply
    5,140.65x = 7,708.68 × 1,629.66
  4. Step 4: Simplify right side
    5,140.65x = 12,562,527.45
  5. Step 5: Solve for x
    x = 12,562,527.45/5,140.65
  6. Step 6: Final answer
    x = 2,443.76

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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.