Home / 3,438.21-5,152.65-1,561.76

Finding the Fourth Proportional to 3,438.21, 5,152.65 and 1,561.76

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Solution

The fourth proportional to 3,438.21, 5,152.65 and 1,561.76 is: 2,340.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,438.21 : 5,152.65 = 1,561.76 : x
  2. Step 2: Convert to fraction form
    3,438.21/5,152.65 = 1,561.76/x
  3. Step 3: Cross multiply
    3,438.21x = 5,152.65 × 1,561.76
  4. Step 4: Simplify right side
    3,438.21x = 8,047,202.66
  5. Step 5: Solve for x
    x = 8,047,202.66/3,438.21
  6. Step 6: Final answer
    x = 2,340.52

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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.