Home / 3,217.80-4,823.10-1,657.20

Finding the Fourth Proportional to 3,217.80, 4,823.10 and 1,657.20

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Solution

The fourth proportional to 3,217.80, 4,823.10 and 1,657.20 is: 2,483.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,217.80 : 4,823.10 = 1,657.20 : x
  2. Step 2: Convert to fraction form
    3,217.80/4,823.10 = 1,657.20/x
  3. Step 3: Cross multiply
    3,217.80x = 4,823.10 × 1,657.20
  4. Step 4: Simplify right side
    3,217.80x = 7,992,841.32
  5. Step 5: Solve for x
    x = 7,992,841.32/3,217.80
  6. Step 6: Final answer
    x = 2,483.95

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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.