Home / 3,128.31-4,693.41-1,372.59

Finding the Fourth Proportional to 3,128.31, 4,693.41 and 1,372.59

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Solution

The fourth proportional to 3,128.31, 4,693.41 and 1,372.59 is: 2,059.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.31 : 4,693.41 = 1,372.59 : x
  2. Step 2: Convert to fraction form
    3,128.31/4,693.41 = 1,372.59/x
  3. Step 3: Cross multiply
    3,128.31x = 4,693.41 × 1,372.59
  4. Step 4: Simplify right side
    3,128.31x = 6,442,127.63
  5. Step 5: Solve for x
    x = 6,442,127.63/3,128.31
  6. Step 6: Final answer
    x = 2,059.30

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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.