Home / 3,145.05-4,340.17-1,818.75

Finding the Fourth Proportional to 3,145.05, 4,340.17 and 1,818.75

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Solution

The fourth proportional to 3,145.05, 4,340.17 and 1,818.75 is: 2,509.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.05 : 4,340.17 = 1,818.75 : x
  2. Step 2: Convert to fraction form
    3,145.05/4,340.17 = 1,818.75/x
  3. Step 3: Cross multiply
    3,145.05x = 4,340.17 × 1,818.75
  4. Step 4: Simplify right side
    3,145.05x = 7,893,684.19
  5. Step 5: Solve for x
    x = 7,893,684.19/3,145.05
  6. Step 6: Final answer
    x = 2,509.88

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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.