Home / 2,980.93-4,471.43-1,421.09

Finding the Fourth Proportional to 2,980.93, 4,471.43 and 1,421.09

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Solution

The fourth proportional to 2,980.93, 4,471.43 and 1,421.09 is: 2,131.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,980.93 : 4,471.43 = 1,421.09 : x
  2. Step 2: Convert to fraction form
    2,980.93/4,471.43 = 1,421.09/x
  3. Step 3: Cross multiply
    2,980.93x = 4,471.43 × 1,421.09
  4. Step 4: Simplify right side
    2,980.93x = 6,354,304.46
  5. Step 5: Solve for x
    x = 6,354,304.46/2,980.93
  6. Step 6: Final answer
    x = 2,131.65

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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.