Home / 4,905.20-7,358.31-1,618.31

Finding the Fourth Proportional to 4,905.20, 7,358.31 and 1,618.31

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Solution

The fourth proportional to 4,905.20, 7,358.31 and 1,618.31 is: 2,427.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,905.20 : 7,358.31 = 1,618.31 : x
  2. Step 2: Convert to fraction form
    4,905.20/7,358.31 = 1,618.31/x
  3. Step 3: Cross multiply
    4,905.20x = 7,358.31 × 1,618.31
  4. Step 4: Simplify right side
    4,905.20x = 11,907,989.86
  5. Step 5: Solve for x
    x = 11,907,989.86/4,905.20
  6. Step 6: Final answer
    x = 2,427.63

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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.