Home / 2,605.06-3,909.64-1,373.20

Finding the Fourth Proportional to 2,605.06, 3,909.64 and 1,373.20

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Solution

The fourth proportional to 2,605.06, 3,909.64 and 1,373.20 is: 2,060.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,605.06 : 3,909.64 = 1,373.20 : x
  2. Step 2: Convert to fraction form
    2,605.06/3,909.64 = 1,373.20/x
  3. Step 3: Cross multiply
    2,605.06x = 3,909.64 × 1,373.20
  4. Step 4: Simplify right side
    2,605.06x = 5,368,717.65
  5. Step 5: Solve for x
    x = 5,368,717.65/2,605.06
  6. Step 6: Final answer
    x = 2,060.88

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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.