Home / 8,581.29-12,857.87-5,285.00

Finding the Fourth Proportional to 8,581.29, 12,857.87 and 5,285.00

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Solution

The fourth proportional to 8,581.29, 12,857.87 and 5,285.00 is: 7,918.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,581.29 : 12,857.87 = 5,285.00 : x
  2. Step 2: Convert to fraction form
    8,581.29/12,857.87 = 5,285.00/x
  3. Step 3: Cross multiply
    8,581.29x = 12,857.87 × 5,285.00
  4. Step 4: Simplify right side
    8,581.29x = 67,953,752.24
  5. Step 5: Solve for x
    x = 67,953,752.24/8,581.29
  6. Step 6: Final answer
    x = 7,918.83

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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.