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Finding the Fourth Proportional to 6,992.18, 10,491.90 and 6,588.80

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Solution

The fourth proportional to 6,992.18, 10,491.90 and 6,588.80 is: 9,886.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,992.18 : 10,491.90 = 6,588.80 : x
  2. Step 2: Convert to fraction form
    6,992.18/10,491.90 = 6,588.80/x
  3. Step 3: Cross multiply
    6,992.18x = 10,491.90 × 6,588.80
  4. Step 4: Simplify right side
    6,992.18x = 69,129,030.72
  5. Step 5: Solve for x
    x = 69,129,030.72/6,992.18
  6. Step 6: Final answer
    x = 9,886.62

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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.