Home / 5,449.45-8,172.38-2,117.47

Finding the Fourth Proportional to 5,449.45, 8,172.38 and 2,117.47

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Solution

The fourth proportional to 5,449.45, 8,172.38 and 2,117.47 is: 3,175.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,449.45 : 8,172.38 = 2,117.47 : x
  2. Step 2: Convert to fraction form
    5,449.45/8,172.38 = 2,117.47/x
  3. Step 3: Cross multiply
    5,449.45x = 8,172.38 × 2,117.47
  4. Step 4: Simplify right side
    5,449.45x = 17,304,727.11
  5. Step 5: Solve for x
    x = 17,304,727.11/5,449.45
  6. Step 6: Final answer
    x = 3,175.50

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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.