Home / 7,321.90-10,120.83-6,740.63

Finding the Fourth Proportional to 7,321.90, 10,120.83 and 6,740.63

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Solution

The fourth proportional to 7,321.90, 10,120.83 and 6,740.63 is: 9,317.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,321.90 : 10,120.83 = 6,740.63 : x
  2. Step 2: Convert to fraction form
    7,321.90/10,120.83 = 6,740.63/x
  3. Step 3: Cross multiply
    7,321.90x = 10,120.83 × 6,740.63
  4. Step 4: Simplify right side
    7,321.90x = 68,220,770.32
  5. Step 5: Solve for x
    x = 68,220,770.32/7,321.90
  6. Step 6: Final answer
    x = 9,317.36

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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.