Home / 2,725.08-4,087.76-777.57

Finding the Fourth Proportional to 2,725.08, 4,087.76 and 777.57

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Solution

The fourth proportional to 2,725.08, 4,087.76 and 777.57 is: 1,166.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,725.08 : 4,087.76 = 777.57 : x
  2. Step 2: Convert to fraction form
    2,725.08/4,087.76 = 777.57/x
  3. Step 3: Cross multiply
    2,725.08x = 4,087.76 × 777.57
  4. Step 4: Simplify right side
    2,725.08x = 3,178,515.66
  5. Step 5: Solve for x
    x = 3,178,515.66/2,725.08
  6. Step 6: Final answer
    x = 1,166.39

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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.