Home / 5,500.71-7,605.09-4,172.31

Finding the Fourth Proportional to 5,500.71, 7,605.09 and 4,172.31

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Solution

The fourth proportional to 5,500.71, 7,605.09 and 4,172.31 is: 5,768.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,500.71 : 7,605.09 = 4,172.31 : x
  2. Step 2: Convert to fraction form
    5,500.71/7,605.09 = 4,172.31/x
  3. Step 3: Cross multiply
    5,500.71x = 7,605.09 × 4,172.31
  4. Step 4: Simplify right side
    5,500.71x = 31,730,793.06
  5. Step 5: Solve for x
    x = 31,730,793.06/5,500.71
  6. Step 6: Final answer
    x = 5,768.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.