Home / 6,279.22-9,420.86-2,121.13

Finding the Fourth Proportional to 6,279.22, 9,420.86 and 2,121.13

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Solution

The fourth proportional to 6,279.22, 9,420.86 and 2,121.13 is: 3,182.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,279.22 : 9,420.86 = 2,121.13 : x
  2. Step 2: Convert to fraction form
    6,279.22/9,420.86 = 2,121.13/x
  3. Step 3: Cross multiply
    6,279.22x = 9,420.86 × 2,121.13
  4. Step 4: Simplify right side
    6,279.22x = 19,982,868.77
  5. Step 5: Solve for x
    x = 19,982,868.77/6,279.22
  6. Step 6: Final answer
    x = 3,182.38

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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.