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Finding the Fourth Proportional to 3,572.55, 5,358 and 1,722.51

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Solution

The fourth proportional to 3,572.55, 5,358 and 1,722.51 is: 2,583.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,572.55 : 5,358 = 1,722.51 : x
  2. Step 2: Convert to fraction form
    3,572.55/5,358 = 1,722.51/x
  3. Step 3: Cross multiply
    3,572.55x = 5,358 × 1,722.51
  4. Step 4: Simplify right side
    3,572.55x = 9,229,208.58
  5. Step 5: Solve for x
    x = 9,229,208.58/3,572.55
  6. Step 6: Final answer
    x = 2,583.37

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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.