Home / 3,438.26-5,156.64-972.41

Finding the Fourth Proportional to 3,438.26, 5,156.64 and 972.41

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Solution

The fourth proportional to 3,438.26, 5,156.64 and 972.41 is: 1,458.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,438.26 : 5,156.64 = 972.41 : x
  2. Step 2: Convert to fraction form
    3,438.26/5,156.64 = 972.41/x
  3. Step 3: Cross multiply
    3,438.26x = 5,156.64 × 972.41
  4. Step 4: Simplify right side
    3,438.26x = 5,014,381.19
  5. Step 5: Solve for x
    x = 5,014,381.19/3,438.26
  6. Step 6: Final answer
    x = 1,458.41

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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.