Home / 1,571.03-2,172.72-1,374.20

Finding the Fourth Proportional to 1,571.03, 2,172.72 and 1,374.20

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Solution

The fourth proportional to 1,571.03, 2,172.72 and 1,374.20 is: 1,900.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,571.03 : 2,172.72 = 1,374.20 : x
  2. Step 2: Convert to fraction form
    1,571.03/2,172.72 = 1,374.20/x
  3. Step 3: Cross multiply
    1,571.03x = 2,172.72 × 1,374.20
  4. Step 4: Simplify right side
    1,571.03x = 2,985,751.82
  5. Step 5: Solve for x
    x = 2,985,751.82/1,571.03
  6. Step 6: Final answer
    x = 1,900.51

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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.