Home / 3,213.40-4,434.14-1,955.12

Finding the Fourth Proportional to 3,213.40, 4,434.14 and 1,955.12

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Solution

The fourth proportional to 3,213.40, 4,434.14 and 1,955.12 is: 2,697.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,213.40 : 4,434.14 = 1,955.12 : x
  2. Step 2: Convert to fraction form
    3,213.40/4,434.14 = 1,955.12/x
  3. Step 3: Cross multiply
    3,213.40x = 4,434.14 × 1,955.12
  4. Step 4: Simplify right side
    3,213.40x = 8,669,275.80
  5. Step 5: Solve for x
    x = 8,669,275.80/3,213.40
  6. Step 6: Final answer
    x = 2,697.85

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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.