Home / 3,438.21-5,156.66-972.44

Finding the Fourth Proportional to 3,438.21, 5,156.66 and 972.44

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Solution

The fourth proportional to 3,438.21, 5,156.66 and 972.44 is: 1,458.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,438.21 : 5,156.66 = 972.44 : x
  2. Step 2: Convert to fraction form
    3,438.21/5,156.66 = 972.44/x
  3. Step 3: Cross multiply
    3,438.21x = 5,156.66 × 972.44
  4. Step 4: Simplify right side
    3,438.21x = 5,014,542.45
  5. Step 5: Solve for x
    x = 5,014,542.45/3,438.21
  6. Step 6: Final answer
    x = 1,458.47

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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.