Home / 2,174.56-3,000.84-1,290.04

Finding the Fourth Proportional to 2,174.56, 3,000.84 and 1,290.04

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Solution

The fourth proportional to 2,174.56, 3,000.84 and 1,290.04 is: 1,780.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,174.56 : 3,000.84 = 1,290.04 : x
  2. Step 2: Convert to fraction form
    2,174.56/3,000.84 = 1,290.04/x
  3. Step 3: Cross multiply
    2,174.56x = 3,000.84 × 1,290.04
  4. Step 4: Simplify right side
    2,174.56x = 3,871,203.63
  5. Step 5: Solve for x
    x = 3,871,203.63/2,174.56
  6. Step 6: Final answer
    x = 1,780.22

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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.