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Finding the Fourth Proportional to 5,168.90, 7,133.08 and 2,811.04

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Solution

The fourth proportional to 5,168.90, 7,133.08 and 2,811.04 is: 3,879.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,168.90 : 7,133.08 = 2,811.04 : x
  2. Step 2: Convert to fraction form
    5,168.90/7,133.08 = 2,811.04/x
  3. Step 3: Cross multiply
    5,168.90x = 7,133.08 × 2,811.04
  4. Step 4: Simplify right side
    5,168.90x = 20,051,373.20
  5. Step 5: Solve for x
    x = 20,051,373.20/5,168.90
  6. Step 6: Final answer
    x = 3,879.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.