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Finding the Fourth Proportional to 6,899.83, 10,342.56 and 6,290.88

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Solution

The fourth proportional to 6,899.83, 10,342.56 and 6,290.88 is: 9,429.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,899.83 : 10,342.56 = 6,290.88 : x
  2. Step 2: Convert to fraction form
    6,899.83/10,342.56 = 6,290.88/x
  3. Step 3: Cross multiply
    6,899.83x = 10,342.56 × 6,290.88
  4. Step 4: Simplify right side
    6,899.83x = 65,063,803.85
  5. Step 5: Solve for x
    x = 65,063,803.85/6,899.83
  6. Step 6: Final answer
    x = 9,429.77

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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.