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Finding the Fourth Proportional to 5,814.45, 8,721.72 and 5,486.40

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Solution

The fourth proportional to 5,814.45, 8,721.72 and 5,486.40 is: 8,229.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,814.45 : 8,721.72 = 5,486.40 : x
  2. Step 2: Convert to fraction form
    5,814.45/8,721.72 = 5,486.40/x
  3. Step 3: Cross multiply
    5,814.45x = 8,721.72 × 5,486.40
  4. Step 4: Simplify right side
    5,814.45x = 47,850,844.61
  5. Step 5: Solve for x
    x = 47,850,844.61/5,814.45
  6. Step 6: Final answer
    x = 8,229.64

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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.