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Finding the Fourth Proportional to 6,511.43, 8,990.91 and 6,013.86

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Solution

The fourth proportional to 6,511.43, 8,990.91 and 6,013.86 is: 8,303.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,511.43 : 8,990.91 = 6,013.86 : x
  2. Step 2: Convert to fraction form
    6,511.43/8,990.91 = 6,013.86/x
  3. Step 3: Cross multiply
    6,511.43x = 8,990.91 × 6,013.86
  4. Step 4: Simplify right side
    6,511.43x = 54,070,074.01
  5. Step 5: Solve for x
    x = 54,070,074.01/6,511.43
  6. Step 6: Final answer
    x = 8,303.88

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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.