Home / 2,980.42-4,112.64-1,653.80

Finding the Fourth Proportional to 2,980.42, 4,112.64 and 1,653.80

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Solution

The fourth proportional to 2,980.42, 4,112.64 and 1,653.80 is: 2,282.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,980.42 : 4,112.64 = 1,653.80 : x
  2. Step 2: Convert to fraction form
    2,980.42/4,112.64 = 1,653.80/x
  3. Step 3: Cross multiply
    2,980.42x = 4,112.64 × 1,653.80
  4. Step 4: Simplify right side
    2,980.42x = 6,801,484.03
  5. Step 5: Solve for x
    x = 6,801,484.03/2,980.42
  6. Step 6: Final answer
    x = 2,282.06

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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.