Home / 7,245.03-9,989.67-6,720.15

Finding the Fourth Proportional to 7,245.03, 9,989.67 and 6,720.15

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Solution

The fourth proportional to 7,245.03, 9,989.67 and 6,720.15 is: 9,265.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,245.03 : 9,989.67 = 6,720.15 : x
  2. Step 2: Convert to fraction form
    7,245.03/9,989.67 = 6,720.15/x
  3. Step 3: Cross multiply
    7,245.03x = 9,989.67 × 6,720.15
  4. Step 4: Simplify right side
    7,245.03x = 67,132,080.85
  5. Step 5: Solve for x
    x = 67,132,080.85/7,245.03
  6. Step 6: Final answer
    x = 9,265.95

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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.