Home / 3,217.32-4,815.45-1,985.72

Finding the Fourth Proportional to 3,217.32, 4,815.45 and 1,985.72

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Solution

The fourth proportional to 3,217.32, 4,815.45 and 1,985.72 is: 2,972.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,217.32 : 4,815.45 = 1,985.72 : x
  2. Step 2: Convert to fraction form
    3,217.32/4,815.45 = 1,985.72/x
  3. Step 3: Cross multiply
    3,217.32x = 4,815.45 × 1,985.72
  4. Step 4: Simplify right side
    3,217.32x = 9,562,111.30
  5. Step 5: Solve for x
    x = 9,562,111.30/3,217.32
  6. Step 6: Final answer
    x = 2,972.07

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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.