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Finding the Fourth Proportional to 2,010.74, 3,015.62 and 777.36

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Solution

The fourth proportional to 2,010.74, 3,015.62 and 777.36 is: 1,165.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,010.74 : 3,015.62 = 777.36 : x
  2. Step 2: Convert to fraction form
    2,010.74/3,015.62 = 777.36/x
  3. Step 3: Cross multiply
    2,010.74x = 3,015.62 × 777.36
  4. Step 4: Simplify right side
    2,010.74x = 2,344,218.48
  5. Step 5: Solve for x
    x = 2,344,218.48/2,010.74
  6. Step 6: Final answer
    x = 1,165.85

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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.