Home / 8,917.86-12,312.30-5,732.64

Finding the Fourth Proportional to 8,917.86, 12,312.30 and 5,732.64

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Solution

The fourth proportional to 8,917.86, 12,312.30 and 5,732.64 is: 7,914.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,917.86 : 12,312.30 = 5,732.64 : x
  2. Step 2: Convert to fraction form
    8,917.86/12,312.30 = 5,732.64/x
  3. Step 3: Cross multiply
    8,917.86x = 12,312.30 × 5,732.64
  4. Step 4: Simplify right side
    8,917.86x = 70,581,983.47
  5. Step 5: Solve for x
    x = 70,581,983.47/8,917.86
  6. Step 6: Final answer
    x = 7,914.68

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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.