Home / 5,317.92-7,985.04-2,857.56

Finding the Fourth Proportional to 5,317.92, 7,985.04 and 2,857.56

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Solution

The fourth proportional to 5,317.92, 7,985.04 and 2,857.56 is: 4,290.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,317.92 : 7,985.04 = 2,857.56 : x
  2. Step 2: Convert to fraction form
    5,317.92/7,985.04 = 2,857.56/x
  3. Step 3: Cross multiply
    5,317.92x = 7,985.04 × 2,857.56
  4. Step 4: Simplify right side
    5,317.92x = 22,817,730.90
  5. Step 5: Solve for x
    x = 22,817,730.90/5,317.92
  6. Step 6: Final answer
    x = 4,290.72

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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.