Home / 3,788.91-5,685.53-1,325.57

Finding the Fourth Proportional to 3,788.91, 5,685.53 and 1,325.57

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Solution

The fourth proportional to 3,788.91, 5,685.53 and 1,325.57 is: 1,989.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,788.91 : 5,685.53 = 1,325.57 : x
  2. Step 2: Convert to fraction form
    3,788.91/5,685.53 = 1,325.57/x
  3. Step 3: Cross multiply
    3,788.91x = 5,685.53 × 1,325.57
  4. Step 4: Simplify right side
    3,788.91x = 7,536,532.95
  5. Step 5: Solve for x
    x = 7,536,532.95/3,788.91
  6. Step 6: Final answer
    x = 1,989.10

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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.