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Finding the Fourth Proportional to 5,169.79, 7,751.74 and 3,528.32

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Solution

The fourth proportional to 5,169.79, 7,751.74 and 3,528.32 is: 5,290.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,169.79 : 7,751.74 = 3,528.32 : x
  2. Step 2: Convert to fraction form
    5,169.79/7,751.74 = 3,528.32/x
  3. Step 3: Cross multiply
    5,169.79x = 7,751.74 × 3,528.32
  4. Step 4: Simplify right side
    5,169.79x = 27,350,601.64
  5. Step 5: Solve for x
    x = 27,350,601.64/5,169.79
  6. Step 6: Final answer
    x = 5,290.47

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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.