Home / 3,125.25-4,688.51-1,393.88

Finding the Fourth Proportional to 3,125.25, 4,688.51 and 1,393.88

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Solution

The fourth proportional to 3,125.25, 4,688.51 and 1,393.88 is: 2,091.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125.25 : 4,688.51 = 1,393.88 : x
  2. Step 2: Convert to fraction form
    3,125.25/4,688.51 = 1,393.88/x
  3. Step 3: Cross multiply
    3,125.25x = 4,688.51 × 1,393.88
  4. Step 4: Simplify right side
    3,125.25x = 6,535,189.91
  5. Step 5: Solve for x
    x = 6,535,189.91/3,125.25
  6. Step 6: Final answer
    x = 2,091.09

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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.