Home / 3,985.61-5,500.32-2,307.08

Finding the Fourth Proportional to 3,985.61, 5,500.32 and 2,307.08

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Solution

The fourth proportional to 3,985.61, 5,500.32 and 2,307.08 is: 3,183.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985.61 : 5,500.32 = 2,307.08 : x
  2. Step 2: Convert to fraction form
    3,985.61/5,500.32 = 2,307.08/x
  3. Step 3: Cross multiply
    3,985.61x = 5,500.32 × 2,307.08
  4. Step 4: Simplify right side
    3,985.61x = 12,689,650.76
  5. Step 5: Solve for x
    x = 12,689,650.76/3,985.61
  6. Step 6: Final answer
    x = 3,183.87

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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.