Home / 7,321.90-10,104.60-4,178.02

Finding the Fourth Proportional to 7,321.90, 10,104.60 and 4,178.02

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Solution

The fourth proportional to 7,321.90, 10,104.60 and 4,178.02 is: 5,765.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,321.90 : 10,104.60 = 4,178.02 : x
  2. Step 2: Convert to fraction form
    7,321.90/10,104.60 = 4,178.02/x
  3. Step 3: Cross multiply
    7,321.90x = 10,104.60 × 4,178.02
  4. Step 4: Simplify right side
    7,321.90x = 42,217,220.89
  5. Step 5: Solve for x
    x = 42,217,220.89/7,321.90
  6. Step 6: Final answer
    x = 5,765.88

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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.