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Finding the Fourth Proportional to 7,000.65, 9,679.19 and 6,690.83

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Solution

The fourth proportional to 7,000.65, 9,679.19 and 6,690.83 is: 9,250.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,000.65 : 9,679.19 = 6,690.83 : x
  2. Step 2: Convert to fraction form
    7,000.65/9,679.19 = 6,690.83/x
  3. Step 3: Cross multiply
    7,000.65x = 9,679.19 × 6,690.83
  4. Step 4: Simplify right side
    7,000.65x = 64,761,732.98
  5. Step 5: Solve for x
    x = 64,761,732.98/7,000.65
  6. Step 6: Final answer
    x = 9,250.82

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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.