Home / 2,620.12-3,615.99-1,557.35

Finding the Fourth Proportional to 2,620.12, 3,615.99 and 1,557.35

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Solution

The fourth proportional to 2,620.12, 3,615.99 and 1,557.35 is: 2,149.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,620.12 : 3,615.99 = 1,557.35 : x
  2. Step 2: Convert to fraction form
    2,620.12/3,615.99 = 1,557.35/x
  3. Step 3: Cross multiply
    2,620.12x = 3,615.99 × 1,557.35
  4. Step 4: Simplify right side
    2,620.12x = 5,631,370.60
  5. Step 5: Solve for x
    x = 5,631,370.60/2,620.12
  6. Step 6: Final answer
    x = 2,149.28

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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.