Home / 4,990.69-7,486.80-1,659.70

Finding the Fourth Proportional to 4,990.69, 7,486.80 and 1,659.70

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Solution

The fourth proportional to 4,990.69, 7,486.80 and 1,659.70 is: 2,489.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,990.69 : 7,486.80 = 1,659.70 : x
  2. Step 2: Convert to fraction form
    4,990.69/7,486.80 = 1,659.70/x
  3. Step 3: Cross multiply
    4,990.69x = 7,486.80 × 1,659.70
  4. Step 4: Simplify right side
    4,990.69x = 12,425,841.96
  5. Step 5: Solve for x
    x = 12,425,841.96/4,990.69
  6. Step 6: Final answer
    x = 2,489.80

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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.