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Finding the Fourth Proportional to 8,998.45, 12,412.52 and 7,005.85

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Solution

The fourth proportional to 8,998.45, 12,412.52 and 7,005.85 is: 9,663.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,998.45 : 12,412.52 = 7,005.85 : x
  2. Step 2: Convert to fraction form
    8,998.45/12,412.52 = 7,005.85/x
  3. Step 3: Cross multiply
    8,998.45x = 12,412.52 × 7,005.85
  4. Step 4: Simplify right side
    8,998.45x = 86,960,218.21
  5. Step 5: Solve for x
    x = 86,960,218.21/8,998.45
  6. Step 6: Final answer
    x = 9,663.91

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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.