Home / 3,142.20-4,336.34-1,745

Finding the Fourth Proportional to 3,142.20, 4,336.34 and 1,745

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Solution

The fourth proportional to 3,142.20, 4,336.34 and 1,745 is: 2,408.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,142.20 : 4,336.34 = 1,745 : x
  2. Step 2: Convert to fraction form
    3,142.20/4,336.34 = 1,745/x
  3. Step 3: Cross multiply
    3,142.20x = 4,336.34 × 1,745
  4. Step 4: Simplify right side
    3,142.20x = 7,566,913.30
  5. Step 5: Solve for x
    x = 7,566,913.30/3,142.20
  6. Step 6: Final answer
    x = 2,408.16

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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.