Home / 3,420.26-5,132.24-3,172.40

Finding the Fourth Proportional to 3,420.26, 5,132.24 and 3,172.40

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Solution

The fourth proportional to 3,420.26, 5,132.24 and 3,172.40 is: 4,760.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420.26 : 5,132.24 = 3,172.40 : x
  2. Step 2: Convert to fraction form
    3,420.26/5,132.24 = 3,172.40/x
  3. Step 3: Cross multiply
    3,420.26x = 5,132.24 × 3,172.40
  4. Step 4: Simplify right side
    3,420.26x = 16,281,518.18
  5. Step 5: Solve for x
    x = 16,281,518.18/3,420.26
  6. Step 6: Final answer
    x = 4,760.32

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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.