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Finding the Fourth Proportional to 2,506.80, 3,759.12 and 774.48

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Solution

The fourth proportional to 2,506.80, 3,759.12 and 774.48 is: 1,161.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,506.80 : 3,759.12 = 774.48 : x
  2. Step 2: Convert to fraction form
    2,506.80/3,759.12 = 774.48/x
  3. Step 3: Cross multiply
    2,506.80x = 3,759.12 × 774.48
  4. Step 4: Simplify right side
    2,506.80x = 2,911,363.26
  5. Step 5: Solve for x
    x = 2,911,363.26/2,506.80
  6. Step 6: Final answer
    x = 1,161.39

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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.