Home / 5,147.80-7,717.08-1,860.12

Finding the Fourth Proportional to 5,147.80, 7,717.08 and 1,860.12

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Solution

The fourth proportional to 5,147.80, 7,717.08 and 1,860.12 is: 2,788.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147.80 : 7,717.08 = 1,860.12 : x
  2. Step 2: Convert to fraction form
    5,147.80/7,717.08 = 1,860.12/x
  3. Step 3: Cross multiply
    5,147.80x = 7,717.08 × 1,860.12
  4. Step 4: Simplify right side
    5,147.80x = 14,354,694.85
  5. Step 5: Solve for x
    x = 14,354,694.85/5,147.80
  6. Step 6: Final answer
    x = 2,788.51

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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.