Home / 2,846.20-3,930.17-1,785.74

Finding the Fourth Proportional to 2,846.20, 3,930.17 and 1,785.74

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Solution

The fourth proportional to 2,846.20, 3,930.17 and 1,785.74 is: 2,465.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,846.20 : 3,930.17 = 1,785.74 : x
  2. Step 2: Convert to fraction form
    2,846.20/3,930.17 = 1,785.74/x
  3. Step 3: Cross multiply
    2,846.20x = 3,930.17 × 1,785.74
  4. Step 4: Simplify right side
    2,846.20x = 7,018,261.78
  5. Step 5: Solve for x
    x = 7,018,261.78/2,846.20
  6. Step 6: Final answer
    x = 2,465.84

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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.