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Finding the Fourth Proportional to 10,864.50, 14,992.05 and 7,679.02

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Solution

The fourth proportional to 10,864.50, 14,992.05 and 7,679.02 is: 10,596.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,864.50 : 14,992.05 = 7,679.02 : x
  2. Step 2: Convert to fraction form
    10,864.50/14,992.05 = 7,679.02/x
  3. Step 3: Cross multiply
    10,864.50x = 14,992.05 × 7,679.02
  4. Step 4: Simplify right side
    10,864.50x = 115,124,251.79
  5. Step 5: Solve for x
    x = 115,124,251.79/10,864.50
  6. Step 6: Final answer
    x = 10,596.37

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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.