Home / 3,145.17-4,340.87-1,819.68

Finding the Fourth Proportional to 3,145.17, 4,340.87 and 1,819.68

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Solution

The fourth proportional to 3,145.17, 4,340.87 and 1,819.68 is: 2,511.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.17 : 4,340.87 = 1,819.68 : x
  2. Step 2: Convert to fraction form
    3,145.17/4,340.87 = 1,819.68/x
  3. Step 3: Cross multiply
    3,145.17x = 4,340.87 × 1,819.68
  4. Step 4: Simplify right side
    3,145.17x = 7,898,963.52
  5. Step 5: Solve for x
    x = 7,898,963.52/3,145.17
  6. Step 6: Final answer
    x = 2,511.46

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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.