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Finding the Fourth Proportional to 8,326.79, 12,490.91 and 3,396.77

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Solution

The fourth proportional to 8,326.79, 12,490.91 and 3,396.77 is: 5,095.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,326.79 : 12,490.91 = 3,396.77 : x
  2. Step 2: Convert to fraction form
    8,326.79/12,490.91 = 3,396.77/x
  3. Step 3: Cross multiply
    8,326.79x = 12,490.91 × 3,396.77
  4. Step 4: Simplify right side
    8,326.79x = 42,428,748.36
  5. Step 5: Solve for x
    x = 42,428,748.36/8,326.79
  6. Step 6: Final answer
    x = 5,095.45

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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.