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Finding the Fourth Proportional to 8,875.82, 12,239.88 and 6,885.65

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Solution

The fourth proportional to 8,875.82, 12,239.88 and 6,885.65 is: 9,495.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,875.82 : 12,239.88 = 6,885.65 : x
  2. Step 2: Convert to fraction form
    8,875.82/12,239.88 = 6,885.65/x
  3. Step 3: Cross multiply
    8,875.82x = 12,239.88 × 6,885.65
  4. Step 4: Simplify right side
    8,875.82x = 84,279,529.72
  5. Step 5: Solve for x
    x = 84,279,529.72/8,875.82
  6. Step 6: Final answer
    x = 9,495.41

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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.