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Finding the Fourth Proportional to 3,785.94, 5,679.87 and 1,477.62

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Solution

The fourth proportional to 3,785.94, 5,679.87 and 1,477.62 is: 2,216.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,785.94 : 5,679.87 = 1,477.62 : x
  2. Step 2: Convert to fraction form
    3,785.94/5,679.87 = 1,477.62/x
  3. Step 3: Cross multiply
    3,785.94x = 5,679.87 × 1,477.62
  4. Step 4: Simplify right side
    3,785.94x = 8,392,689.51
  5. Step 5: Solve for x
    x = 8,392,689.51/3,785.94
  6. Step 6: Final answer
    x = 2,216.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.