Home / 3,131.22-4,315.01-2,335.46

Finding the Fourth Proportional to 3,131.22, 4,315.01 and 2,335.46

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Solution

The fourth proportional to 3,131.22, 4,315.01 and 2,335.46 is: 3,218.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.22 : 4,315.01 = 2,335.46 : x
  2. Step 2: Convert to fraction form
    3,131.22/4,315.01 = 2,335.46/x
  3. Step 3: Cross multiply
    3,131.22x = 4,315.01 × 2,335.46
  4. Step 4: Simplify right side
    3,131.22x = 10,077,532.36
  5. Step 5: Solve for x
    x = 10,077,532.36/3,131.22
  6. Step 6: Final answer
    x = 3,218.40

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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.