Home / 4,212.25-6,318.63-1,290.58

Finding the Fourth Proportional to 4,212.25, 6,318.63 and 1,290.58

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Solution

The fourth proportional to 4,212.25, 6,318.63 and 1,290.58 is: 1,935.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,212.25 : 6,318.63 = 1,290.58 : x
  2. Step 2: Convert to fraction form
    4,212.25/6,318.63 = 1,290.58/x
  3. Step 3: Cross multiply
    4,212.25x = 6,318.63 × 1,290.58
  4. Step 4: Simplify right side
    4,212.25x = 8,154,697.51
  5. Step 5: Solve for x
    x = 8,154,697.51/4,212.25
  6. Step 6: Final answer
    x = 1,935.95

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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.