Home / 2,980.80-4,108.77-2,350.35

Finding the Fourth Proportional to 2,980.80, 4,108.77 and 2,350.35

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Solution

The fourth proportional to 2,980.80, 4,108.77 and 2,350.35 is: 3,239.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,980.80 : 4,108.77 = 2,350.35 : x
  2. Step 2: Convert to fraction form
    2,980.80/4,108.77 = 2,350.35/x
  3. Step 3: Cross multiply
    2,980.80x = 4,108.77 × 2,350.35
  4. Step 4: Simplify right side
    2,980.80x = 9,657,047.57
  5. Step 5: Solve for x
    x = 9,657,047.57/2,980.80
  6. Step 6: Final answer
    x = 3,239.75

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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.