Home / 2,074.13-3,110.55-687.16

Finding the Fourth Proportional to 2,074.13, 3,110.55 and 687.16

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Solution

The fourth proportional to 2,074.13, 3,110.55 and 687.16 is: 1,030.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,074.13 : 3,110.55 = 687.16 : x
  2. Step 2: Convert to fraction form
    2,074.13/3,110.55 = 687.16/x
  3. Step 3: Cross multiply
    2,074.13x = 3,110.55 × 687.16
  4. Step 4: Simplify right side
    2,074.13x = 2,137,429.99
  5. Step 5: Solve for x
    x = 2,137,429.99/2,074.13
  6. Step 6: Final answer
    x = 1,030.52

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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.