Home / 2,905.28-4,007.61-1,785.42

Finding the Fourth Proportional to 2,905.28, 4,007.61 and 1,785.42

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Solution

The fourth proportional to 2,905.28, 4,007.61 and 1,785.42 is: 2,462.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,905.28 : 4,007.61 = 1,785.42 : x
  2. Step 2: Convert to fraction form
    2,905.28/4,007.61 = 1,785.42/x
  3. Step 3: Cross multiply
    2,905.28x = 4,007.61 × 1,785.42
  4. Step 4: Simplify right side
    2,905.28x = 7,155,267.05
  5. Step 5: Solve for x
    x = 7,155,267.05/2,905.28
  6. Step 6: Final answer
    x = 2,462.85

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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.