Home / 3,145.05-4,340.61-1,801.08

Finding the Fourth Proportional to 3,145.05, 4,340.61 and 1,801.08

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Solution

The fourth proportional to 3,145.05, 4,340.61 and 1,801.08 is: 2,485.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.05 : 4,340.61 = 1,801.08 : x
  2. Step 2: Convert to fraction form
    3,145.05/4,340.61 = 1,801.08/x
  3. Step 3: Cross multiply
    3,145.05x = 4,340.61 × 1,801.08
  4. Step 4: Simplify right side
    3,145.05x = 7,817,785.86
  5. Step 5: Solve for x
    x = 7,817,785.86/3,145.05
  6. Step 6: Final answer
    x = 2,485.74

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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.