Home / 3,131.48-4,321.54-1,734.36

Finding the Fourth Proportional to 3,131.48, 4,321.54 and 1,734.36

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Solution

The fourth proportional to 3,131.48, 4,321.54 and 1,734.36 is: 2,393.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.48 : 4,321.54 = 1,734.36 : x
  2. Step 2: Convert to fraction form
    3,131.48/4,321.54 = 1,734.36/x
  3. Step 3: Cross multiply
    3,131.48x = 4,321.54 × 1,734.36
  4. Step 4: Simplify right side
    3,131.48x = 7,495,106.11
  5. Step 5: Solve for x
    x = 7,495,106.11/3,131.48
  6. Step 6: Final answer
    x = 2,393.47

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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.