Home / 5,209.74-7,815.89-1,512.22

Finding the Fourth Proportional to 5,209.74, 7,815.89 and 1,512.22

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Solution

The fourth proportional to 5,209.74, 7,815.89 and 1,512.22 is: 2,268.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,209.74 : 7,815.89 = 1,512.22 : x
  2. Step 2: Convert to fraction form
    5,209.74/7,815.89 = 1,512.22/x
  3. Step 3: Cross multiply
    5,209.74x = 7,815.89 × 1,512.22
  4. Step 4: Simplify right side
    5,209.74x = 11,819,345.18
  5. Step 5: Solve for x
    x = 11,819,345.18/5,209.74
  6. Step 6: Final answer
    x = 2,268.70

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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.