Home / 9,120.02-13,680.02-5,221.72

Finding the Fourth Proportional to 9,120.02, 13,680.02 and 5,221.72

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Solution

The fourth proportional to 9,120.02, 13,680.02 and 5,221.72 is: 7,832.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,120.02 : 13,680.02 = 5,221.72 : x
  2. Step 2: Convert to fraction form
    9,120.02/13,680.02 = 5,221.72/x
  3. Step 3: Cross multiply
    9,120.02x = 13,680.02 × 5,221.72
  4. Step 4: Simplify right side
    9,120.02x = 71,433,234.03
  5. Step 5: Solve for x
    x = 71,433,234.03/9,120.02
  6. Step 6: Final answer
    x = 7,832.57

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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.