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Finding the Fourth Proportional to 3,290.99, 4,936.51 and 1,316.79

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Solution

The fourth proportional to 3,290.99, 4,936.51 and 1,316.79 is: 1,975.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,290.99 : 4,936.51 = 1,316.79 : x
  2. Step 2: Convert to fraction form
    3,290.99/4,936.51 = 1,316.79/x
  3. Step 3: Cross multiply
    3,290.99x = 4,936.51 × 1,316.79
  4. Step 4: Simplify right side
    3,290.99x = 6,500,319.03
  5. Step 5: Solve for x
    x = 6,500,319.03/3,290.99
  6. Step 6: Final answer
    x = 1,975.19

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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.