Home / 2,980.41-4,113.15-1,721.70

Finding the Fourth Proportional to 2,980.41, 4,113.15 and 1,721.70

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Solution

The fourth proportional to 2,980.41, 4,113.15 and 1,721.70 is: 2,376.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,980.41 : 4,113.15 = 1,721.70 : x
  2. Step 2: Convert to fraction form
    2,980.41/4,113.15 = 1,721.70/x
  3. Step 3: Cross multiply
    2,980.41x = 4,113.15 × 1,721.70
  4. Step 4: Simplify right side
    2,980.41x = 7,081,610.36
  5. Step 5: Solve for x
    x = 7,081,610.36/2,980.41
  6. Step 6: Final answer
    x = 2,376.05

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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.