Home / 9,139.21-13,710.26-3,874.24

Finding the Fourth Proportional to 9,139.21, 13,710.26 and 3,874.24

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Solution

The fourth proportional to 9,139.21, 13,710.26 and 3,874.24 is: 5,811.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,139.21 : 13,710.26 = 3,874.24 : x
  2. Step 2: Convert to fraction form
    9,139.21/13,710.26 = 3,874.24/x
  3. Step 3: Cross multiply
    9,139.21x = 13,710.26 × 3,874.24
  4. Step 4: Simplify right side
    9,139.21x = 53,116,837.70
  5. Step 5: Solve for x
    x = 53,116,837.70/9,139.21
  6. Step 6: Final answer
    x = 5,811.97

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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.