Home / 4,780.12-7,166.08-1,816.88

Finding the Fourth Proportional to 4,780.12, 7,166.08 and 1,816.88

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Solution

The fourth proportional to 4,780.12, 7,166.08 and 1,816.88 is: 2,723.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,780.12 : 7,166.08 = 1,816.88 : x
  2. Step 2: Convert to fraction form
    4,780.12/7,166.08 = 1,816.88/x
  3. Step 3: Cross multiply
    4,780.12x = 7,166.08 × 1,816.88
  4. Step 4: Simplify right side
    4,780.12x = 13,019,907.43
  5. Step 5: Solve for x
    x = 13,019,907.43/4,780.12
  6. Step 6: Final answer
    x = 2,723.76

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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.