Home / 7,121.98-9,826.15-4,137.24

Finding the Fourth Proportional to 7,121.98, 9,826.15 and 4,137.24

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Solution

The fourth proportional to 7,121.98, 9,826.15 and 4,137.24 is: 5,708.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,121.98 : 9,826.15 = 4,137.24 : x
  2. Step 2: Convert to fraction form
    7,121.98/9,826.15 = 4,137.24/x
  3. Step 3: Cross multiply
    7,121.98x = 9,826.15 × 4,137.24
  4. Step 4: Simplify right side
    7,121.98x = 40,653,120.14
  5. Step 5: Solve for x
    x = 40,653,120.14/7,121.98
  6. Step 6: Final answer
    x = 5,708.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.