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Finding the Fourth Proportional to 3,710.80, 5,118.96 and 3,010.96

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Solution

The fourth proportional to 3,710.80, 5,118.96 and 3,010.96 is: 4,153.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,710.80 : 5,118.96 = 3,010.96 : x
  2. Step 2: Convert to fraction form
    3,710.80/5,118.96 = 3,010.96/x
  3. Step 3: Cross multiply
    3,710.80x = 5,118.96 × 3,010.96
  4. Step 4: Simplify right side
    3,710.80x = 15,412,983.80
  5. Step 5: Solve for x
    x = 15,412,983.80/3,710.80
  6. Step 6: Final answer
    x = 4,153.55

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1.5x scale

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.