Home / 7,142.04-10,708.80-2,755.86

Finding the Fourth Proportional to 7,142.04, 10,708.80 and 2,755.86

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Solution

The fourth proportional to 7,142.04, 10,708.80 and 2,755.86 is: 4,132.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,142.04 : 10,708.80 = 2,755.86 : x
  2. Step 2: Convert to fraction form
    7,142.04/10,708.80 = 2,755.86/x
  3. Step 3: Cross multiply
    7,142.04x = 10,708.80 × 2,755.86
  4. Step 4: Simplify right side
    7,142.04x = 29,511,953.57
  5. Step 5: Solve for x
    x = 29,511,953.57/7,142.04
  6. Step 6: Final answer
    x = 4,132.15

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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.