Home / 3,478.47-5,217.86-1,286.02

Finding the Fourth Proportional to 3,478.47, 5,217.86 and 1,286.02

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Solution

The fourth proportional to 3,478.47, 5,217.86 and 1,286.02 is: 1,929.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.47 : 5,217.86 = 1,286.02 : x
  2. Step 2: Convert to fraction form
    3,478.47/5,217.86 = 1,286.02/x
  3. Step 3: Cross multiply
    3,478.47x = 5,217.86 × 1,286.02
  4. Step 4: Simplify right side
    3,478.47x = 6,710,272.32
  5. Step 5: Solve for x
    x = 6,710,272.32/3,478.47
  6. Step 6: Final answer
    x = 1,929.09

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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.