Home / 5,139.34-7,709.03-1,243.74

Finding the Fourth Proportional to 5,139.34, 7,709.03 and 1,243.74

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Solution

The fourth proportional to 5,139.34, 7,709.03 and 1,243.74 is: 1,865.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,139.34 : 7,709.03 = 1,243.74 : x
  2. Step 2: Convert to fraction form
    5,139.34/7,709.03 = 1,243.74/x
  3. Step 3: Cross multiply
    5,139.34x = 7,709.03 × 1,243.74
  4. Step 4: Simplify right side
    5,139.34x = 9,588,028.97
  5. Step 5: Solve for x
    x = 9,588,028.97/5,139.34
  6. Step 6: Final answer
    x = 1,865.61

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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.