Home / 8,543.72-11,789.70-4,817

Finding the Fourth Proportional to 8,543.72, 11,789.70 and 4,817

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Solution

The fourth proportional to 8,543.72, 11,789.70 and 4,817 is: 6,647.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,543.72 : 11,789.70 = 4,817 : x
  2. Step 2: Convert to fraction form
    8,543.72/11,789.70 = 4,817/x
  3. Step 3: Cross multiply
    8,543.72x = 11,789.70 × 4,817
  4. Step 4: Simplify right side
    8,543.72x = 56,790,984.90
  5. Step 5: Solve for x
    x = 56,790,984.90/8,543.72
  6. Step 6: Final answer
    x = 6,647.10

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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.