Home / 7,128.41-10,693.89-2,447.21

Finding the Fourth Proportional to 7,128.41, 10,693.89 and 2,447.21

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Solution

The fourth proportional to 7,128.41, 10,693.89 and 2,447.21 is: 3,671.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128.41 : 10,693.89 = 2,447.21 : x
  2. Step 2: Convert to fraction form
    7,128.41/10,693.89 = 2,447.21/x
  3. Step 3: Cross multiply
    7,128.41x = 10,693.89 × 2,447.21
  4. Step 4: Simplify right side
    7,128.41x = 26,170,221.28
  5. Step 5: Solve for x
    x = 26,170,221.28/7,128.41
  6. Step 6: Final answer
    x = 3,671.26

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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.