Home / 2,980.13-4,112.78-1,653.96

Finding the Fourth Proportional to 2,980.13, 4,112.78 and 1,653.96

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Solution

The fourth proportional to 2,980.13, 4,112.78 and 1,653.96 is: 2,282.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,980.13 : 4,112.78 = 1,653.96 : x
  2. Step 2: Convert to fraction form
    2,980.13/4,112.78 = 1,653.96/x
  3. Step 3: Cross multiply
    2,980.13x = 4,112.78 × 1,653.96
  4. Step 4: Simplify right side
    2,980.13x = 6,802,373.61
  5. Step 5: Solve for x
    x = 6,802,373.61/2,980.13
  6. Step 6: Final answer
    x = 2,282.58

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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.