Home / 3,128.41-4,317.21-1,712.23

Finding the Fourth Proportional to 3,128.41, 4,317.21 and 1,712.23

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Solution

The fourth proportional to 3,128.41, 4,317.21 and 1,712.23 is: 2,362.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.41 : 4,317.21 = 1,712.23 : x
  2. Step 2: Convert to fraction form
    3,128.41/4,317.21 = 1,712.23/x
  3. Step 3: Cross multiply
    3,128.41x = 4,317.21 × 1,712.23
  4. Step 4: Simplify right side
    3,128.41x = 7,392,056.48
  5. Step 5: Solve for x
    x = 7,392,056.48/3,128.41
  6. Step 6: Final answer
    x = 2,362.88

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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.