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Finding the Fourth Proportional to 5,222.87, 7,208.06 and 2,985.09

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Solution

The fourth proportional to 5,222.87, 7,208.06 and 2,985.09 is: 4,119.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,222.87 : 7,208.06 = 2,985.09 : x
  2. Step 2: Convert to fraction form
    5,222.87/7,208.06 = 2,985.09/x
  3. Step 3: Cross multiply
    5,222.87x = 7,208.06 × 2,985.09
  4. Step 4: Simplify right side
    5,222.87x = 21,516,707.83
  5. Step 5: Solve for x
    x = 21,516,707.83/5,222.87
  6. Step 6: Final answer
    x = 4,119.71

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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.