Home / 7,124.90-10,687.96-1,860.61

Finding the Fourth Proportional to 7,124.90, 10,687.96 and 1,860.61

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Solution

The fourth proportional to 7,124.90, 10,687.96 and 1,860.61 is: 2,791.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,124.90 : 10,687.96 = 1,860.61 : x
  2. Step 2: Convert to fraction form
    7,124.90/10,687.96 = 1,860.61/x
  3. Step 3: Cross multiply
    7,124.90x = 10,687.96 × 1,860.61
  4. Step 4: Simplify right side
    7,124.90x = 19,886,120.60
  5. Step 5: Solve for x
    x = 19,886,120.60/7,124.90
  6. Step 6: Final answer
    x = 2,791.07

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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.