Home / 2,620.13-3,615.37-1,557.90

Finding the Fourth Proportional to 2,620.13, 3,615.37 and 1,557.90

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Solution

The fourth proportional to 2,620.13, 3,615.37 and 1,557.90 is: 2,149.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,620.13 : 3,615.37 = 1,557.90 : x
  2. Step 2: Convert to fraction form
    2,620.13/3,615.37 = 1,557.90/x
  3. Step 3: Cross multiply
    2,620.13x = 3,615.37 × 1,557.90
  4. Step 4: Simplify right side
    2,620.13x = 5,632,381.03
  5. Step 5: Solve for x
    x = 5,632,381.03/2,620.13
  6. Step 6: Final answer
    x = 2,149.66

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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.