Home / 8,688.73-11,990.36-4,911.83

Finding the Fourth Proportional to 8,688.73, 11,990.36 and 4,911.83

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Solution

The fourth proportional to 8,688.73, 11,990.36 and 4,911.83 is: 6,778.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,688.73 : 11,990.36 = 4,911.83 : x
  2. Step 2: Convert to fraction form
    8,688.73/11,990.36 = 4,911.83/x
  3. Step 3: Cross multiply
    8,688.73x = 11,990.36 × 4,911.83
  4. Step 4: Simplify right side
    8,688.73x = 58,894,562.29
  5. Step 5: Solve for x
    x = 58,894,562.29/8,688.73
  6. Step 6: Final answer
    x = 6,778.27

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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.