Home / 3,128.83-4,317.90-1,712.43

Finding the Fourth Proportional to 3,128.83, 4,317.90 and 1,712.43

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Solution

The fourth proportional to 3,128.83, 4,317.90 and 1,712.43 is: 2,363.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.83 : 4,317.90 = 1,712.43 : x
  2. Step 2: Convert to fraction form
    3,128.83/4,317.90 = 1,712.43/x
  3. Step 3: Cross multiply
    3,128.83x = 4,317.90 × 1,712.43
  4. Step 4: Simplify right side
    3,128.83x = 7,394,101.50
  5. Step 5: Solve for x
    x = 7,394,101.50/3,128.83
  6. Step 6: Final answer
    x = 2,363.22

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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.