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Finding the Fourth Proportional to 2,010.11, 3,015.53 and 839.53

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Solution

The fourth proportional to 2,010.11, 3,015.53 and 839.53 is: 1,259.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,010.11 : 3,015.53 = 839.53 : x
  2. Step 2: Convert to fraction form
    2,010.11/3,015.53 = 839.53/x
  3. Step 3: Cross multiply
    2,010.11x = 3,015.53 × 839.53
  4. Step 4: Simplify right side
    2,010.11x = 2,531,627.90
  5. Step 5: Solve for x
    x = 2,531,627.90/2,010.11
  6. Step 6: Final answer
    x = 1,259.45

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1.5x scale

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.