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Finding the Fourth Proportional to 2,531.78, 3,797.86 and 776.93

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Solution

The fourth proportional to 2,531.78, 3,797.86 and 776.93 is: 1,165.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,531.78 : 3,797.86 = 776.93 : x
  2. Step 2: Convert to fraction form
    2,531.78/3,797.86 = 776.93/x
  3. Step 3: Cross multiply
    2,531.78x = 3,797.86 × 776.93
  4. Step 4: Simplify right side
    2,531.78x = 2,950,650.44
  5. Step 5: Solve for x
    x = 2,950,650.44/2,531.78
  6. Step 6: Final answer
    x = 1,165.45

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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.