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Finding the Fourth Proportional to 3,707.78, 5,559.87 and 1,399.46

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Solution

The fourth proportional to 3,707.78, 5,559.87 and 1,399.46 is: 2,098.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,707.78 : 5,559.87 = 1,399.46 : x
  2. Step 2: Convert to fraction form
    3,707.78/5,559.87 = 1,399.46/x
  3. Step 3: Cross multiply
    3,707.78x = 5,559.87 × 1,399.46
  4. Step 4: Simplify right side
    3,707.78x = 7,780,815.67
  5. Step 5: Solve for x
    x = 7,780,815.67/3,707.78
  6. Step 6: Final answer
    x = 2,098.51

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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.