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Finding the Fourth Proportional to 8,421.79, 11,623.05 and 5,066.29

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Solution

The fourth proportional to 8,421.79, 11,623.05 and 5,066.29 is: 6,992.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,421.79 : 11,623.05 = 5,066.29 : x
  2. Step 2: Convert to fraction form
    8,421.79/11,623.05 = 5,066.29/x
  3. Step 3: Cross multiply
    8,421.79x = 11,623.05 × 5,066.29
  4. Step 4: Simplify right side
    8,421.79x = 58,885,741.98
  5. Step 5: Solve for x
    x = 58,885,741.98/8,421.79
  6. Step 6: Final answer
    x = 6,992.07

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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.