Home / 8,456.36-12,681.32-2,908.68

Finding the Fourth Proportional to 8,456.36, 12,681.32 and 2,908.68

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Solution

The fourth proportional to 8,456.36, 12,681.32 and 2,908.68 is: 4,361.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,456.36 : 12,681.32 = 2,908.68 : x
  2. Step 2: Convert to fraction form
    8,456.36/12,681.32 = 2,908.68/x
  3. Step 3: Cross multiply
    8,456.36x = 12,681.32 × 2,908.68
  4. Step 4: Simplify right side
    8,456.36x = 36,885,901.86
  5. Step 5: Solve for x
    x = 36,885,901.86/8,456.36
  6. Step 6: Final answer
    x = 4,361.91

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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.