Home / 7,122.02-10,684.45-2,191.47

Finding the Fourth Proportional to 7,122.02, 10,684.45 and 2,191.47

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Solution

The fourth proportional to 7,122.02, 10,684.45 and 2,191.47 is: 3,287.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,122.02 : 10,684.45 = 2,191.47 : x
  2. Step 2: Convert to fraction form
    7,122.02/10,684.45 = 2,191.47/x
  3. Step 3: Cross multiply
    7,122.02x = 10,684.45 × 2,191.47
  4. Step 4: Simplify right side
    7,122.02x = 23,414,651.64
  5. Step 5: Solve for x
    x = 23,414,651.64/7,122.02
  6. Step 6: Final answer
    x = 3,287.64

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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.