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Finding the Fourth Proportional to 4,718.88, 7,078.12 and 1,208.85

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Solution

The fourth proportional to 4,718.88, 7,078.12 and 1,208.85 is: 1,813.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,718.88 : 7,078.12 = 1,208.85 : x
  2. Step 2: Convert to fraction form
    4,718.88/7,078.12 = 1,208.85/x
  3. Step 3: Cross multiply
    4,718.88x = 7,078.12 × 1,208.85
  4. Step 4: Simplify right side
    4,718.88x = 8,556,385.36
  5. Step 5: Solve for x
    x = 8,556,385.36/4,718.88
  6. Step 6: Final answer
    x = 1,813.22

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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.