Home / 2,905.20-4,358.25-1,056.78

Finding the Fourth Proportional to 2,905.20, 4,358.25 and 1,056.78

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Solution

The fourth proportional to 2,905.20, 4,358.25 and 1,056.78 is: 1,585.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,905.20 : 4,358.25 = 1,056.78 : x
  2. Step 2: Convert to fraction form
    2,905.20/4,358.25 = 1,056.78/x
  3. Step 3: Cross multiply
    2,905.20x = 4,358.25 × 1,056.78
  4. Step 4: Simplify right side
    2,905.20x = 4,605,711.44
  5. Step 5: Solve for x
    x = 4,605,711.44/2,905.20
  6. Step 6: Final answer
    x = 1,585.33

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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.