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Finding the Fourth Proportional to 5,543.40, 8,315.10 and 5,089.80

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Solution

The fourth proportional to 5,543.40, 8,315.10 and 5,089.80 is: 7,634.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,543.40 : 8,315.10 = 5,089.80 : x
  2. Step 2: Convert to fraction form
    5,543.40/8,315.10 = 5,089.80/x
  3. Step 3: Cross multiply
    5,543.40x = 8,315.10 × 5,089.80
  4. Step 4: Simplify right side
    5,543.40x = 42,322,195.98
  5. Step 5: Solve for x
    x = 42,322,195.98/5,543.40
  6. Step 6: Final answer
    x = 7,634.70

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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.